There is a single light of science, and to brighten it anywhere is to brighten it everywhere. Isaac Asimov
Monday, February 28, 2011
Saturday, February 19, 2011
Need a Physics Refresher? This NFL Cheerleader Has You Covered
Who says NFL cheerleaders can’t also be science geeks?
Wendy Brown, who just completed her first season as an Atlanta Falcons cheerleader, is actually wrapping up her fifth and final year at Georgia Tech, where she’s pursuing a degree in biomedical engineering. And it was her geeky, science-centric tendencies that led her to becoming a spokeswoman for NBC’s Science of NFL Football educational series.
And, as it turns out, she’s not the only Falcons cheerleaders pursuing higher education in science, as seven of her colleagues are also going through a science-heavy course load. And when she’s got some free time during class, Brown will take to her Twitter account and have a little fun at the expense of her classmates.
For the rest of the article, click here
Saturday, February 12, 2011
Bill O'Reilly and Stephen Colbert Explain the Universe!
"How'd the moon get here? Look, you pinheads who attacked me for this, you guys are just desperate. How'd the moon get here? How'd the sun get there? How'd it get there? Can you explain that to me? How come we have that and Mars doesn't have it?" -Bill O'ReillyOnce upon a time, humans looked at the tides -- going out and coming in -- and we had no idea what caused them. At high tides, the sea level would rise, and the coast would get swept up by the oceans, while at low tides, the water would recede, leaving tidepools behind.
Low tides and high tides would each happen twice a day. But we started noticing that the highest high tides and the lowest low tides -- spring tides -- happened during new Moons and full Moons. On the other hands, the most moderate tides, where high tides were relatively low and low tides were relatively high -- neap tides -- happened during the first and last quarter Moon phases.
It wasn't long before we put this picture together.
Sure enough, the Moon is the dominant cause of the tides, with the Sun responsible for about 30% of what we get. And thanks to the laws of gravity we understand how the tides work, even in more extreme cases.
But apparently, this isn't good enough for Bill O'Reilly. After stating that nobody can explain the tides and this proves the existence of God, many people (rightly) threw the Moon in his face.
Lucky for you, Bill, I am a patient man.
The Moon is almost completely devoid of iron, the densest abundant element on Earth. And the rocks the Apollo astronauts have brought back from the Moon have, conversely, demonstrated that the rocks on the Moon's surface -- unlike asteroids, meteorites, and Mars' rocks -- are identical in composition to the rocks on Earth's surface. So that's why we're pretty sure the Moon came from the collision of two proto-planets that collided, forming the Earth and the Moon as we know them today.
And that gave rise to the Sun, along with a proto-planetary disk of gas and dust that collapsed to form the planets, comets, and asteroids, among other things.
3.) How'd it get there? Well, I assume you mean in context with everything else that's there. Our Sun lives in this place we call "the galaxy."
A collection of hundreds of billions of stars, our star formed about 4.6 billion years ago out of a combination of pristine hydrogen gas from the Big Bang and recycled material from at least two previous generations of stars. Gravity holds our star in a stable orbit, about 25,000 light years from the center of our galaxy.
And if you want an alternate take on Bill O'Reilly's latest, you can always listen to Stephen Colbert's extremely informed opinion on it.
Thanks to my buddy and loyal reader Dave for tipping me off to this one! And for everyone else out there, have a great weekend!
Sunday, February 06, 2011
Autopsy Cutbacks Reveal 'Gray Homicides'
by Sandra Bartlett, of NPR News Investigations
There's no way that we can look at every case we should probably be looking at. When you only see 1 in every 3 cases, the possibility that a homicide's going to be missed are pretty great. - Craig Harvey, chief death investigator, Los Angeles Coroner's Office
Many underfunded and understaffed medical examiner and coroner offices have stopped doing autopsies in some categories of deaths. In some states suicides are not autopsied, in others people who die in car accidents, and many jurisdictions have stopped performing autopsies on people over the age of 60 unless it is an obvious violent death. In Oklahoma, for example, they lower the age limit to 40.
An investigation by NPR, PBS Frontline and ProPublica found concerns among law enforcement and health care professionals over the trend to assume the elderly always die of natural causes. They fear there's a quiet epidemic of what they call "gray homicides" going undetected and unpunished.
The article mentions one case in which justice was done, involving a caregiver that had been arrested in connection with the death of one of the residents, and proved to be connected tp that of another which had already been dismissed as natural by the medical examiners office, that of Richard McDonough...
"The deaths are complicated," Allen says. "But we can't just say it's complicated and push it aside. We can't just say they're old and they're going to die soon and not look at it as something that is significant."
Allen says if autopsies on the elderly are stopped, the truth about a suspicious death may never be learned.
"In this particular case, the truth did go to the grave; it was buried, it was 6 feet under with Mr. Kittower. And this abuse would have just continued," Allen says. "It was only that death that actually got someone to come forward. And I think [if] these secrets go to the grave ... more and more people will just get abused in the process."
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