This week, music is bringing Americans and Russians together in a way that policy discussions never can. And don't call that a cliche in front of the music director of the Chicago Symphony Orchestra.

If U.S. relations with Russia have hit a sticky patch over Syria and other issues lately, that didn't stop the Chicago Symphony from thrilling a Russian audience this past Wednesday night, just as it did on its last visit — to the then-Soviet Union in 1990.

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.

Transcript

IRA FLATOW, HOST:

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.

A Dutch virologist is considering his full range of legal options if his government refuses to lift the restrictions it has put on his controversial bird flu research, and matters could quickly come to a head after a meeting next Monday that will be attended by U. S. observers.

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.

The AP reports:

Of Monsters and Men is an Icelandic sextet specializing in catchy folk-pop. The group came together in 2009 when singer Nanna Bryndís Hilmarsdóttir began recruiting backups for her acoustic solo act. In 2010, Of Monsters and Men gained national fame when it won an annual Icelandic battle of the bands; since then, the buzz has only grown.

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.