Tales of Naked Science
There is a single light of science, and to brighten it anywhere is to brighten it everywhere. Isaac Asimov
Sunday, December 08, 2019
Sunday, January 08, 2017
Zombies Would Wipe Out Humans in Less than 100 Days
By Stephanie Pappas, Live Science Contributor | January 6, 2017
Click here for the Zombie Math Article
The zombie apocalypse won't take long.
A new article in a peer-reviewed student journal finds that the zombie hordes would take Earth's population down to a mere 273 survivors in 100 days.
I've got my anti-zombie kit already prepared (but no, I won't share it with you). Are you ready yet?
Sunday, October 30, 2016
World wildlife 'falls by 58% in 40 years'
The Living Planet assessment, by the Zoological Society of London (ZSL) and WWF, suggests that if the trend continues that decline could reach two-thirds among vertebrates by 2020.
The figures suggest that animals living in lakes, rivers and wetlands are suffering the biggest losses.
Human activity, including habitat loss, wildlife trade, pollution and climate change contributed to the declines.
Dr Mike Barrett. head of science and policy at WWF, said: "It's pretty clear under 'business as usual' we will see continued declines in these wildlife populations. But I think now we've reached a point where there isn't really any excuse to let this carry on.
"We know what the causes are and we know the scale of the impact that humans are having on nature and on wildlife populations - it really is now down to us to act."
Wow, this is heavy - While I probably won't be around much in 40 years, I'd hate to think that all the creatures, great and small, won't be around for my granddaughter to see live, and maybe not even in a zoo! Maybe the next generation can do a better job than mine did...so long and thanks for all the fish! - JG
Sunday, August 07, 2016
Welcome New Students!
Hey new student dudes and dudettes! You've found my blog!
Already you've proved how much smarter you are, compared to that guy next to you (eeek!).
Every now and then, you'll find a story or video link to something of interest in science. Visit the link, read the article or watch the video, and in the comments section, write me one or two sentences explaining what it was about, and include your name (so I can give you credit for it).
If you like, you could email me your comment at jgiacobbe@nakedscience.org or john.giacobbe@royalpalmcharter.com
Awesome! You are such a good student!
Already you've proved how much smarter you are, compared to that guy next to you (eeek!).
Every now and then, you'll find a story or video link to something of interest in science. Visit the link, read the article or watch the video, and in the comments section, write me one or two sentences explaining what it was about, and include your name (so I can give you credit for it).
If you like, you could email me your comment at jgiacobbe@nakedscience.org or john.giacobbe@royalpalmcharter.com
Awesome! You are such a good student!
Saturday, September 05, 2015
Chimpanzees Are Able to Plan Ahead, Use Tools as Weapons
This is pretty cool...read it and watch the video...and reply for extra credit!!!
Saturday, August 01, 2015
Well, we've been really quiet for some time now, but I think things are about to change...to start, how about some thoughts....
I think, what a joy it is to be alive,
and wonder if I will ever leap inward,
to the root of this flesh,
and know myself as I truly am?
The root is there,
and any random act of will, or word, or thought, may free me.
Until then all things a man may do are mine.
I but await the event that will free me.....
I think, what a joy it is to be alive,
and wonder if I will ever leap inward,
to the root of this flesh,
and know myself as I truly am?
The root is there,
and any random act of will, or word, or thought, may free me.
Until then all things a man may do are mine.
I but await the event that will free me.....
Sunday, December 28, 2014
Biggest Scientific Breakthroughs of 2014
Biggest Scientific Breakthroughs of 2014
Well, here are some cool science stuff from last year. Check them out, visit a link or two (or more), and write me a line or two in either the comments section or by email for some extra credit
First, let's look at our own ancestors, and wonder at their abilities...
Maybe your interests tend towards the far out, so how about the discovery of the First Earth-Sized Habitable Zone Planet?
if that's not cool and weird enough, how about the Worlds First Birth With A Donated Womb?
and lastly, just so we can get to know our future robot overlords, how about this first step, the Largest Robotic Swarm In History Takes Shape
Well, here are some cool science stuff from last year. Check them out, visit a link or two (or more), and write me a line or two in either the comments section or by email for some extra credit
First, let's look at our own ancestors, and wonder at their abilities...
Next, we've created a Living Organism With An Expanded Genetic Alphabet...
Or, if that's not to your taste, how about an Artificial Yeast Chromosome Was Built From Scratch
Maybe your interests tend towards the far out, so how about the discovery of the First Earth-Sized Habitable Zone Planet?
if that's not cool and weird enough, how about the Worlds First Birth With A Donated Womb?
and lastly, just so we can get to know our future robot overlords, how about this first step, the Largest Robotic Swarm In History Takes Shape
Saturday, October 11, 2014
Some Cool News in Science.....10.2014
Some Cool News in Science.....
Oldest relative to universal ancestor found
The remains of a man who died in 315 B.C. in southern Africa have identified him as the closest known relative to humanity's common female ancestor, a study published in Genome Biology and Evolution reports. "He belongs to the earliest diverged lineage -- the oldest we know of," said study leader Vanessa Hayes of the Garvan Institute in Australia. He lived more than 100,000 years after his female ancestor, and is the first ancient human from sub-Saharan Africa to undergo DNA sequencing, researchers say. New Scientist (10/9)
The remains of a man who died in 315 B.C. in southern Africa have identified him as the closest known relative to humanity's common female ancestor, a study published in Genome Biology and Evolution reports. "He belongs to the earliest diverged lineage -- the oldest we know of," said study leader Vanessa Hayes of the Garvan Institute in Australia. He lived more than 100,000 years after his female ancestor, and is the first ancient human from sub-Saharan Africa to undergo DNA sequencing, researchers say. New Scientist (10/9)
Invasive species evolutionarily predisposed to compete
Some plants and creatures are evolutionarily predisposed to do well in non-native environments while others are not, according to a study inGlobal Ecology and Biogeography. Researchers studied locations where many invasive species originate and found they had a high diversity of competing species, making them predisposed to adapt to different environments. The New York Times (tiered subscription model) (10/9)
Some plants and creatures are evolutionarily predisposed to do well in non-native environments while others are not, according to a study inGlobal Ecology and Biogeography. Researchers studied locations where many invasive species originate and found they had a high diversity of competing species, making them predisposed to adapt to different environments. The New York Times (tiered subscription model) (10/9)
“Grace Silva has a horrible form of thyroid cancer that is considered untreatable — usually, patients are sent to a hospice and die within months of learning they have the disease. But she is still alive four years after her diagnosis. She is what cancer doctors call an exceptional responder: someone who defies all expectations by responding dramatically to a drug tried not with a real rationale but more out of a doctor’s desperate urge to do something.” NY Times (10/9)
“When his infant son Sam was diagnosed with type 1 diabetes two decades ago, Doug Melton made himself a promise: He would cure it. When his daughter Emma was diagnosed with the same autoimmune disease at 14, he redoubled his efforts. Finally he can see the finish line. In a paper published Thursday in the journal Cell, Melton announces that he has created a virtually unlimited supply of the cells that are missing in people with type 1 diabetes.” National Geographic (10/10)
“Lipids, the chemical family that includes fats and related molecules, get blamed for clogged arteries and heart attacks. But thanks to careful detective work tracking the effects of a particular protein, researchers have discovered a class of lipids that prevent or reverse some of the harmful metabolic changes of diabetes and similar disorders in mice. These molecules might be therapeutic themselves, or they could lead researchers to new drugs.” Science NOW (10/10)
“Mirrors are often used to elicit aggression in animal behavioural studies, with the assumption being that creatures unable to recognize themselves will react as if encountering a rival. But research suggests that such work may simply reflect what scientists expect to see, and not actual aggression. For most people, looking in a mirror does not trigger a bout of snarling hostility at the face staring back. But many animals do seem to react aggressively to their mirror image, and for years mirrors have been used to trigger such responses for behavioural research on species ranging from birds to fish.” Nature News and Comment (10/10)
Sidewinder snakes show researchers how to climb slippery sand
Scientists have turned to sidewinder snakes and their robotic counterparts to discover how the creatures navigate sandy terrain without sliding. Researchers hope that learning how the snakes traverse the tricky terrain may one day lead to robots that can easily navigate rubble in search-and-rescue missions or archaeological sites. National Geographic News (free registration)/Weird & Wild blog (10/9) NY Times(10/9)
Scientists have turned to sidewinder snakes and their robotic counterparts to discover how the creatures navigate sandy terrain without sliding. Researchers hope that learning how the snakes traverse the tricky terrain may one day lead to robots that can easily navigate rubble in search-and-rescue missions or archaeological sites. National Geographic News (free registration)/Weird & Wild blog (10/9) NY Times(10/9)
“When most people think about biodiversity they envision rainforests or coral reefs. Filmmaker Jeremy Monroe is on a mission to change that and teach about the amazing species that live in freshwater. Many people know only the freshwater animals that are commonly caught as sport fish, such as the largemouth bass.” Scientific American (10/10)
Study: Responses to various types of humor change with age
What people find funny can depend on their age, according to a study in Psychology and Aging. Researchers showed comedy clips to subjects of various ages and found that older adults disapprove of jokes they consider aggressive or mean. The Washington Post (tiered subscription model) (10/9)
What people find funny can depend on their age, according to a study in Psychology and Aging. Researchers showed comedy clips to subjects of various ages and found that older adults disapprove of jokes they consider aggressive or mean. The Washington Post (tiered subscription model) (10/9)
“By day, Dan Chitwood of the Donald Danforth Plant Science Center in St. Louis is a plant morphologist who studies how the form and structure of tomatoes evolves differently as they adapt to new environments. By night, when he needs to think through a problem or take a break, he plays the viola. Chitwood has now crossed his passions for plants and stringed instruments by publishing a study that documents the evolution of violin shapes using the same methods that he uses for charting the evolving form of leaves. The study published Oct. 8 inPLoS One used these methods to examine the shape of 9,000 instruments built over a period of 400 years.” Scientific American (10/10)
NASA ready to track comet as it flies by Mars
In a little over a week, a mountain-sized comet will zip by Mars, and NASA is ready for its close-up. The space agency has an array of spacecraft, the Mars rovers and myriad telescopes set to track comet Siding Spring from various angles and lights as it passes the red planetOct. 19. "This particular comet has never before entered the inner solar system, so it will provide a fresh source of clues to our solar system's earliest days," said NASA's John Grunsfield. Los Angeles Times (tiered subscription model) (10/9)
In a little over a week, a mountain-sized comet will zip by Mars, and NASA is ready for its close-up. The space agency has an array of spacecraft, the Mars rovers and myriad telescopes set to track comet Siding Spring from various angles and lights as it passes the red planetOct. 19. "This particular comet has never before entered the inner solar system, so it will provide a fresh source of clues to our solar system's earliest days," said NASA's John Grunsfield. Los Angeles Times (tiered subscription model) (10/9)
Drought reveals remains of once-submerged Oregon town
A drought has revealed the remnants of a community in Oregon that had once been submerged in a man-made reservoir, according to the U.S. Bureau of Reclamation. Archaeologists are excavating the buildings, dating back to 1920, which were left behind in the 1960s when the reservoir was constructed and residents of Klamath Junction were relocated. Depending on the findings, the site may be considered for inclusion in the National Register of Historic Places. Reuters (10/10)
A drought has revealed the remnants of a community in Oregon that had once been submerged in a man-made reservoir, according to the U.S. Bureau of Reclamation. Archaeologists are excavating the buildings, dating back to 1920, which were left behind in the 1960s when the reservoir was constructed and residents of Klamath Junction were relocated. Depending on the findings, the site may be considered for inclusion in the National Register of Historic Places. Reuters (10/10)
Researchers excavating the 2,000-year-old wreckage of the Antikythera in Greece have found a treasure trove ancient goods. "The evidence shows this is the largest ancient shipwreck ever discovered," said marine archaeologist Brendan Foley. The wreckage was discovered more than a century ago but the current excavation has found it covers a larger area than was previously thought. LiveScience.com (10/9)
Nearby galaxy offers clues about how universe went from dark to light
A nearby galaxy densely packed with young stars is helping researchers understand how the early universe went from dark to light, according to a study published in Science. Stars forming in the galaxy J0921+4509 emit high levels of extreme-ultraviolet light, some of which escapes the dense fog of hydrogen gas. The Christian Science Monitor (10/9)
A nearby galaxy densely packed with young stars is helping researchers understand how the early universe went from dark to light, according to a study published in Science. Stars forming in the galaxy J0921+4509 emit high levels of extreme-ultraviolet light, some of which escapes the dense fog of hydrogen gas. The Christian Science Monitor (10/9)
Sunday, September 21, 2014
Science in the News:
Why Some Males Evolved to Be Small and Sneaky
Why Some Males Evolved to Be Small and Sneaky
“Bigger males may get a lot of attention, but sometimes being smaller—and sneakier—is more successful when it comes to mating. In the East African cichlid fish, Lamprologus callipterus, males come in two sizes: giants or dwarves that are 40 times smaller than their beefier rivals. (Watch a video of male cichlid fish fighting.) It’s an example of male polymorphism, a phenomenon in which males of the same species take different forms. Though people vary in height, men don’t come in two different sizes like the cichlids. Several research studies suggest that tall men—those over 5’7″—are more successful in dating and in their careers—but they get divorced at higher rates.” National Geographic (9/18)
“Warning: The 21st century may get a lot more crowded than previously thought. In a paper published Thursday in Science, demographers from several universities and the United Nations Population Division conclude that instead of leveling off in the second half of the 21st century, as the UN predicted less than a decade ago, the world's population will continue to grow beyond 2100. (Read "Population Seven Billion" in National Geographic magazine.)” National Geographic (9/18)
“The whitebark pine grows in the high, cold reaches of the Rocky and Sierra Mountains, and some individuals, wind-bent and tenacious, manage to thrive for more than a thousand years. Despite its hardiness, the species may not survive much longer. A lethal fungus is decimating the pines, as are voracious mountain pine beetles. Making matters worse, forest managers have suppressed the fires that are required to stimulate whitebark pine seedlings.” NY Times (9/18)
“On a frigid day last February, Maren Friesen drove eight hours across snow-covered plains to Centralia, Pennsylvania. A fire ignited a seam of coal below the town in 1962, and more than 60 years later it's still smoldering away underground. The place is a steaming, smoldering wasteland—one that may hold a key to feeding the world. Friesen, a microbiologist, is on a hunt for a microbe thought to live in these strange, hot soils. The humble bacterium has an unusual ability that may help farmers grow more crops.” National Geographic (9/18)
Dogs show signs of pessimism, study suggests
Dogs, often thought of as eternal optimists, can be pessimists too, according to a study published in PLOS ONE. Researchers taught a group of dogs to identify two specific tones, associating one with tasty milk and the other with plain water, then introduced a third tone to see if the dogs would respond enthusiastically, as if expecting milk, or not respond at all. The unresponsive, or pessimistic, dogs were more cautious and easily discouraged, researchers say. Discovery (9/18)
Dogs, often thought of as eternal optimists, can be pessimists too, according to a study published in PLOS ONE. Researchers taught a group of dogs to identify two specific tones, associating one with tasty milk and the other with plain water, then introduced a third tone to see if the dogs would respond enthusiastically, as if expecting milk, or not respond at all. The unresponsive, or pessimistic, dogs were more cautious and easily discouraged, researchers say. Discovery (9/18)
Scientists identify molecule that boosts stem cells in cord blood
Researchers from the Institute for Research in Immunology and Cancer at the University of Montreal announced the discovery of the molecule UM171 that could be used to multiply cultured cord blood stem cells by a factor of 10. The method could be used to make cord blood stem cells a viable transplant option for adults, and a clinical study of the molecule is scheduled to begin this year. The findings were reported in the journal Science. Medical News Today (9/18)
Researchers from the Institute for Research in Immunology and Cancer at the University of Montreal announced the discovery of the molecule UM171 that could be used to multiply cultured cord blood stem cells by a factor of 10. The method could be used to make cord blood stem cells a viable transplant option for adults, and a clinical study of the molecule is scheduled to begin this year. The findings were reported in the journal Science. Medical News Today (9/18)
Ancient Roman fort found in Germany
The remnants of a 1,900-year-old Roman fort have been found in the German town of Gernsheim. Researchers had long suspected a fort existed in the area, which once was the site of a village in the first to third centuries, but until now no fort had been found. "It was assumed that this settlement had to have been based on a fort, since it was customary for the families of the soldiers to live outside the fort in a village-like settlement," said archaeologist Thomas Maurer of the University of Frankfurt. LiveScience.com (9/18)
The remnants of a 1,900-year-old Roman fort have been found in the German town of Gernsheim. Researchers had long suspected a fort existed in the area, which once was the site of a village in the first to third centuries, but until now no fort had been found. "It was assumed that this settlement had to have been based on a fort, since it was customary for the families of the soldiers to live outside the fort in a village-like settlement," said archaeologist Thomas Maurer of the University of Frankfurt. LiveScience.com (9/18)
Remains of pre-Civil War slaves found at renovation site at Nashville Zoo
Human remains found during a renovation at the Nashville Zoo appear to have belonged to slaves buried between 1820 and 1850 in a cemetery on what was once known as the Grassmere farm. An analysis of nine of the skeletons shows that they were African-Americans and each showed signs of having lives of hard labor. Archaeologists and zoo officials have reburied the remains found in the site's 19 graves in another area of the zoo and hope to create exhibits "to tell exactly who these people were, to what extent that we know," said the zoo's historic site manager Tori Mason.The Tennessean (Nashville) (tiered subscription model) (9/18)
Human remains found during a renovation at the Nashville Zoo appear to have belonged to slaves buried between 1820 and 1850 in a cemetery on what was once known as the Grassmere farm. An analysis of nine of the skeletons shows that they were African-Americans and each showed signs of having lives of hard labor. Archaeologists and zoo officials have reburied the remains found in the site's 19 graves in another area of the zoo and hope to create exhibits "to tell exactly who these people were, to what extent that we know," said the zoo's historic site manager Tori Mason.The Tennessean (Nashville) (tiered subscription model) (9/18)
Disc galaxies can form from massive collisions, study finds
Several collisions between galaxies can result in the creation of disc galaxies like the Milky Way, according to research published in the Astrophysical Journal Supplement. Researchers were surprised by their findings after studying colliding galaxies 40 million to 600 million light-years from Earth, believing that only elliptical galaxies were born during mergers. "This is a large and unexpected step towards understanding the mystery of the birth of disc galaxies," said Junko Ueda of the Japan Society for the Promotion of Science and the lead researcher. Space.com (9/17)
Several collisions between galaxies can result in the creation of disc galaxies like the Milky Way, according to research published in the Astrophysical Journal Supplement. Researchers were surprised by their findings after studying colliding galaxies 40 million to 600 million light-years from Earth, believing that only elliptical galaxies were born during mergers. "This is a large and unexpected step towards understanding the mystery of the birth of disc galaxies," said Junko Ueda of the Japan Society for the Promotion of Science and the lead researcher. Space.com (9/17)
Strange signal detected on space station could offer clues to dark matter
Evidence of the existence of dark matter may have been found by the Alpha Magnetic Spectrometer particle detector on the International Space Station. The AMS has detected an unknown signal that researchers think is a neutralino, a dark matter particle. While researchers have stopped short of saying they've found definitive proof of dark matter, "we still need to measure how quickly the positron fraction falls off at the highest energies in order to rule out astrophysical sources such as pulsars," said Samuel Ting of the Massachusetts Institute of Technology and CERN, and lead AMS researcher. Discovery (9/18)
Evidence of the existence of dark matter may have been found by the Alpha Magnetic Spectrometer particle detector on the International Space Station. The AMS has detected an unknown signal that researchers think is a neutralino, a dark matter particle. While researchers have stopped short of saying they've found definitive proof of dark matter, "we still need to measure how quickly the positron fraction falls off at the highest energies in order to rule out astrophysical sources such as pulsars," said Samuel Ting of the Massachusetts Institute of Technology and CERN, and lead AMS researcher. Discovery (9/18)
Monday, August 18, 2014
Welcome to a New Year!
Since you've already found this place, consider yourself one up on everyone else. If you visit here regularly, you'll find opportunities for extra credit, and rather cool bits, if I do say so myself.
For your first extra credit, all you have to do is comment on this post! Look for the comment buttons at the bottom, and tell me your name, and how clever you are for doing this cake-walk extra credit.
Good Luck!
Mr. Giacobbe
Since you've already found this place, consider yourself one up on everyone else. If you visit here regularly, you'll find opportunities for extra credit, and rather cool bits, if I do say so myself.
For your first extra credit, all you have to do is comment on this post! Look for the comment buttons at the bottom, and tell me your name, and how clever you are for doing this cake-walk extra credit.
Good Luck!
Mr. Giacobbe
Thursday, June 19, 2014
Current Events in Science - June 20th
Current Events in Science
Astronomy:
Life Science:
Fish Fossils Shed Light on Origin of Jaws
Several fossil specimens of a Cambrian fish called Metaspriggina walcotti recently
discovered in Canada shed new light on the development of the earliest
vertebrates, including the origin of jaws.
The details in the fossils are stunning; even the eyes are beautifully
preserved and clearly evident. The
fossils, which date from 505 million years ago, also show pairs of
exceptionally well-preserved arches near the front of the fish’s body. These arches have long been known to have
played a key role in the evolution of vertebrates, including the origin of
jaws. Until now, however, a lack of
quality fossils has meant that the arrangement of these arches in the first
vertebrates had been hypothetical. So here
we have another example where a prediction is actually verified by observation
— a hallmark of science.) The first of
the pairs or arches, closest to the head, eventually led to the evolution of
jaws in vertebrates. Also, the
arrangement of the muscles shows that Metaspriggina
walcotti were active swimmers, not unlike a trout, and the animals saw the
world through a pair of large eyes and sensed their surrounding environment
with nasal structures.
http://www.sci-news.com/paleontology/science-fish-fossils-metaspriggina-walcotti-origin-jaws-01986.html
http://www.sci-news.com/paleontology/science-fish-fossils-metaspriggina-walcotti-origin-jaws-01986.html
Earth Science:
Canadian Scientists Discover Northernmost
Perennial Spring
A team of researchers has announced the discovery
of the earth’s highest latitude perennial spring, located in the polar desert
of the Canadian High Arctic. The Ice
River Spring demonstrates that deep groundwater circulation through the
cryosphere occurs, and can form gullies in a region of extreme low temperatures
and with morphology remarkably similar to those on Mars. Recordings show that this spring flows
year-round, even during 24 hours of darkness in the winter months, when air
temperatures are as low as –50°C (–58°F).
Climate Change:
Earth Has Its Warmest May
on Record
Two of the leading centers that track global surface temperatures have
reported their data for May, and they both found it to be the warmest such
month on record for the planet. NASA
found that May had an average global temperature that was 1.38 degrees Fahrenheit
above average, which would make it the warmest such month, coming out far ahead
of May 2012. The Japanese Meteorological
Agency's separate analysis also found both May and the meteorological spring
months of March through May to be the warmest on record. Later this week, the National Oceanic and
Atmospheric Administration (NOAA) will release their global numbers, which
typically closely match the other centers’.
http://mashable.com/2014/06/17/earth-warmest-may-spring/
http://mashable.com/2014/06/17/earth-warmest-may-spring/
Physical Science and
Technology:
Silicon Could Be Replaced By Carbon Nanotubes
in Many Circuits
When it
comes to electronics, silicon will now have to share the spotlight. Researchers have developed a flexible,
energy-efficient circuit using carbon nanotubes. Carbon nanotubes consist of carbon atoms
arranged into microscopic tubes. These
could take the place of silicon as the traditional material used in electronic
chips, since carbon nanotubes are more transparent, flexible, and lower cost. The potential applications for this kind of
integrated circuitry are numerous, including light-emitting diodes, digital
circuits, radio frequency identification tags, sensors, and wearable
electronics. Even heads-up displays on vehicle dashboards could soon be a
reality. The new technology also has
medical applications. To obtain medical
information from a patient such as heart rate or brainwave data, stiff
electrode objects are placed on several fixed locations on the patient's body.
With this new flexible circuit, electrodes could be placed all over the
patient's body with just a single large but flexible object.
Astronomy:
Galaxy Images Extended to Ultraviolet
Astronomers
previously captured long-exposure photos of galaxies in the direction of the
constellation Fornax in visible and infrared light. Galaxies were revealed that are so far away
that the light we see today left those galaxies over 10 billion years ago. Now new photos have been acquired in the
ultraviolet part of the spectrum, which reveal the formation process of
galaxies, particularly at their younger stages.
The previous lack of information from ultraviolet light made studying
the galaxies like trying to understand the history of families without knowing
about the grade-school children. The addition of the ultraviolet fills in this
missing range.
Science & Society
Thirst for water moves and shakes California
In California’s Central Valley, removing
groundwater to irrigate crops may trigger small earthquakes and uplift nearby
mountains. California’s thirst for water
is creating unrest. During the dry season, tiny earthquakes rattle the state. And GPS measurements show that its mountains
have begun creeping higher, bit by bit.
Scientists have linked the two phenomena to the heavy pumping of water
from natural reserves below California’s Central Valley. The groundwater provides drinking water and
irrigates some of the country’s most productive farms. All that water has a lot of mass. The ground
acts similar to a mattress after you get out of bed. So removing all that water weight from beneath
the Central Valley has allowed the ground nearby to rise back up. In California, that upward movement has taken
the surrounding mountains with it.
https://student.societyforscience.org/article/thirst-water-moves-and-shakes-california
Wednesday, June 11, 2014
Science News for June 11th
Science News.......
Life Science:
New Fossil Bug Species Found in
45-Million-Year-Old Baltic Amber
Over
99.9% of the species to have ever inhabited the Earth are now extinct. One member of an extinct bug species was
found trapped in a 45-million-year-old honey-colored, transparent piece of
Baltic amber. (Baltic amber is a
fossilized tree resin found near the shores of the eastern Baltic Sea in
Europe.) Living species of the same
genus, Aradus, commonly live on and
under the bark of dead trees, which could be an explanation why so many species
are well preserved in amber deposits.
The new species has been named Aradus
macrosomus. The specific name comes from the Greek words ‘macros’ (large)
and ‘soma’ (body), referring to the unusually large size of the bug.
http://www.sci-news.com/paleontology/science-fossil-bug-species-baltic-amber-01962.html
http://www.sci-news.com/paleontology/science-fossil-bug-species-baltic-amber-01962.html
Earth Science:
Scientists Discover New Underwater Volcano on
Hawai’i
The Hawaiian Islands formed as the Pacific plate
moved over a source of volcanism (a “hot spot”). The islands formed successively, with each
island or submerged seamount in the chain successively older toward the
northwest, ranging in age from 7 million to 28 million years. As we know it today, the island O’ahu is the
remnants of two eruptions. But scientists have found that extending almost 100
km from the western tip of this island is a large region called the submarine
Ka’ena Ridge. It is that region that has
now been recognized to represent a precursor volcano to the island of O’ahu,
and on whose flanks the later volcanoes formed, creating the island as we see
it today.
http://www.sci-news.com/geology/science-kaena-volcano-hawaii-01931.html
http://www.sci-news.com/geology/science-kaena-volcano-hawaii-01931.html
Physical Science:
Physicists Detect Energy-Carrying “Exciton”
in Metal
An
interesting fact about the reflection of light is that the photon (particle of
light) that gets reflected from a mirror is not the same photon that first hit
the mirror. The original photon gets
absorbed and an identical photon is created emitted in a process that involves
a kind of particle called an exciton. Excitons have been difficult to detect,
because they last for only one ten-thousandth of a millionth of a millionth of
a second! But now they have been
detected. The ability to detect excitons
in metals will help scientists better understand how light is converted to
electrical and chemical energy in plants and solar cells. In the future it may result in more efficient
methods of communication using light.
Astronomy:
Gas Dwarfs: Astronomers Identify New Type of
Extrasolar Planets
Our Solar
system hosts small, rocky terrestrial planets like Earth and Mars and large gas
giants like Neptune and Jupiter. But
it’s missing planets between about one and four times the size of Earth. NASA’s Kepler mission has recently discovered
that this type of planet is very common around other stars.
Science & Society
Gender Bias May Influence Hurricane
Preparedness
Hurricane
names help to make public safety messages memorable, but new research shows
that the choice of name may influence how people react to evacuation orders. Although the World Meteorological Organization
assigns the storms alternating male and female names, historical records show
that those with more feminine names had higher death tolls. Could people be avoiding evacuation because
they assume that female-named storms will be gentler? Researchers tested this idea with written
scenarios that described an upcoming storm and asked respondents how dangerous
they expected the storm to be and whether they would follow a voluntary
evacuation order. No matter which names
they used —Victor/Victoria, Christopher/Christine, or selections from the
upcoming hurricane name lists — respondents who read about male-named
hurricanes judged them as riskier and said they would be more likely to
evacuate than people who read about hurricanes with female names. The researchers say that this may reflect an
"implicit sexism" that gets in the way of understanding and
responding to public safety messages. A
new naming system perhaps based on animals or objects may be in order, they
suggest.
Thursday, March 27, 2014
Dolphin whistle instantly translated by computer
Software has performed the first real-time translation of a
dolphin whistle – and better data tools are giving fresh insights into
primate communication too
IT was late August 2013 and Denise Herzing was
swimming in the Caribbean. The dolphin pod she had been tracking for the
past 25 years was playing around her boat. Suddenly, she heard one of
them say, "Sargassum".
"I was like whoa! We have a match. I was
stunned," says Herzing, who is the director of the Wild Dolphin Project.
She was wearing a prototype dolphin translator called Cetacean Hearing and Telemetry (CHAT) and it had just translated a live dolphin whistle for the first time.
It detected a whistle for sargassum, or
seaweed, which she and her team had invented to use when playing with
the dolphin pod. They hoped the dolphins would adopt the whistles, which
are easy to distinguish from their own natural whistles – and they were
not disappointed. When the computer picked up the sargassum whistle,
Herzing heard her own recorded voice saying the word into her ear.
Read the rest of the article here
Tuesday, February 11, 2014
Petrified National Forest
What Wiped Out the American West? Investigating a Triassic Extinction
Strewn across the dusty ground is the wreckage of a wetland forest that suddenly wilted and died 215 million years ago. Paul Olsen gestures at the broken lumps of white, red, and black quartz scattered about. “You see how it looks ropey?” he asks. He holds up a piece. “It looks like someone took little pieces of rope, snipped them up, and laid them down.”
Olsen believes that these scattered rocks mark the moment of a mass extinction that wiped out many species across North America. He would like to identify the calamity that triggered this extinction. But as I stand beside him in the midday sun, I’m unable to see the subtle clues that his trained eye perceives so easily. As I look at the rocks all about, I simply don’t see the ropey, cylindrical shapes that he’s talking about.
To read the rest of the story, click here...
Friday, February 07, 2014
Alleged jewel thief's kiss for victim leads to DNA fingerprint - and arrest
Alleged jewel thief's kiss for victim leads to DNA fingerprint - and arrest
French police hold man after taking swab from pecked cheek of gagged Paris store owner, then finding DNA database match...
An alleged jewel thief who sealed his crime with a kiss was
caught after police analysed the DNA on his victim's cheek. Forensic
scientists at the scene swabbed the woman's cheek to isolate the genetic
profile.
The robber and an accomplice were said to have tied up, gagged and threatened the owner of a Paris jewellery store after following her home. They poured what they claimed was petrol over her head and told her they would set it alight if she did not give them the codes for the shop alarm.
When one of the robbers returned from clearing out the shop of jewels the pair released the woman, 56, who had been tied to a chair for four hours. It was then that the 20-year-old thief made his mistake. "The crook gave the victim a kiss on the cheek, in what was apparently a sign of compassion after the ordeal he had put her through," a police source told Le Parisien newspaper. "As soon as she was free the victim alerted the police.
"We hoped we could isolate the genetic fingerprint of her assailant. And indeed his DNA was identified and found to be on the national genetic print database."
A few months later detectives discovered the DNA matched a man who was being held by the authorities near Nîmes, southern France, on suspicion of other crimes.
During questioning the man admitted kissing his victim to "make up for the trauma". He has been remanded in custody while detectives trace his accomplice.
The robber and an accomplice were said to have tied up, gagged and threatened the owner of a Paris jewellery store after following her home. They poured what they claimed was petrol over her head and told her they would set it alight if she did not give them the codes for the shop alarm.
When one of the robbers returned from clearing out the shop of jewels the pair released the woman, 56, who had been tied to a chair for four hours. It was then that the 20-year-old thief made his mistake. "The crook gave the victim a kiss on the cheek, in what was apparently a sign of compassion after the ordeal he had put her through," a police source told Le Parisien newspaper. "As soon as she was free the victim alerted the police.
"We hoped we could isolate the genetic fingerprint of her assailant. And indeed his DNA was identified and found to be on the national genetic print database."
A few months later detectives discovered the DNA matched a man who was being held by the authorities near Nîmes, southern France, on suspicion of other crimes.
During questioning the man admitted kissing his victim to "make up for the trauma". He has been remanded in custody while detectives trace his accomplice.
Sunday, January 26, 2014
Immortal jellyfish: Does it really live forever?
The Turritopsis nutricula jellyfish has
displayed a remarkable ability to regenerate its cells in times of
crisis.
While it is often joked that cats have nine lives, a certain
species of jellyfish has been deemed “immortal” by scientists who have
observed its ability to, when in crisis, revert its cells to their
earliest form and grow anew. That means that these tiny creatures, 4 mm
to 5 mm long, potentially have infinite lives.
The creature, known scientifically as Turritopsis nutricula,
was discovered in the Mediterranean Sea in 1883, but its unique
regeneration was not known until the mid-1990s. How does the process
work? If a mature Turritopsis is threatened — injured or starving, for
example — it attaches itself to a surface in warm ocean waters and
converts into a blob. From that state, its cells undergo
transdifferentiation, in which the cells essentially transform into
different types of cells. Muscle cells can become sperm or eggs, or
nerve cells can change into muscle cells, “revealing a transformation
potential unparalleled in the animal kingdom,” according to the original study of the species published in 1996.
Since the Turritopsis’ virtual immortality was discovered, so have
swarms of genetically identical jellyfish far from their original
habitat, including in Japan, Spain and the Atlantic Ocean side of
Panama. Researchers have concluded that these multiplying creatures are
getting caught in ballast waters, water that is sucked into and pumped
out of the long distance cargo ships. Polyps also could be growing on
the ship’s hulls. Though genetically identical, these jellyfish seem to
have adapted to their new environments. For example, specimens from
swarms living in tropical waters have been found to have eight
tentacles, while those discovered in temperate regions have 24 or more
tentacles.
Read the rest here....
Subscribe to:
Posts (Atom)