If diet is destiny, then modern humans should thank our ancestors for their ability to eat just about anything.
Two new studies peek into the distant past to try to figure out just how big a role food played in human evolution. One says that eating meat made it possible for early human mothers to wean babies earlier and have more children.
This is SCIENCE FRIDAY. I'm Ira Flatow. We're here in California, broadcasting from the California Academy of Sciences in San Francisco. And just outside the Golden Gate, of course, is the Pacific Ocean. It is the largest body of water on Earth, and its trenches are also the deepest. You could put Mount Everest into some of them, and the top would not even peek out.
And now it's time for Backtalk. That's where we lift the curtain on what's happening in the TELL ME MORE blogosphere and hear from you, the listener. Editor Ammad Omar is here once again.
Ammad, what do you have for us today?
AMMAD OMAR, BYLINE: OK, Michel. In just a few minutes we're going to hear the next installment of our Muses and Metaphor series - that's in honor of National Poetry Month and we've been asking listeners to tweet poems in 140 characters or less.
There's another bit of tragic news to report today: 43 people are dead after a truck crashed into a passenger bus in eastern Mexico today. Authorities told the AFP that the incident happened after a trailer came loose and hit a bus carrying agricultural workers headed to work.
Jean-Luc Melenchon, the Left Front presidential candidate, draws huge crowds, rivaling those of mainstream candidates Nicolas Sarkozy and Francois Hollande. Here, he delivers a speech during a campaign meeting on April 1 in Grigny, outside Paris.
Credit Thomas Samson / AFP/Getty Images
French presidential candidate Jean-Luc Melenchon gives a speech at the Bastille square in Paris on March 18.
Credit Yoan Valat / EPA/Landov
An estimated 100,000 Melanchon supporters gathered to hear the candidate speak at a rally at Paris' Bastille monument last month.
Originally published on Mon April 23, 2012 9:16 am
Smoking is bad. Quitting smoking is hard. But exercising can make quitting easier, and make sliding back into smoking less likely.
That's the word from a big new study, which tracked the health and habits of 434,190 people in Taiwan from 1996 to 2008. Smokers who got just 15 minutes of exercise a day were 55 percent more likely to quit than were people who weren't active at all. And those active smokers were 43 percent less likely to relapse when they did quit.
This is SCIENCE FRIDAY. I'm Ira Flatow. We're here in California, broadcasting from the California Academy of Sciences in San Francisco. And while you might think Silicon Valley or biotech when you think of Northern California, this part of the state is also home to some of the biggest names in the movie business.