The Obama administration faces tricky political and legal questions on the subject of gay marriage. By the end of this month, the federal government is expected to file not just one but two briefs in a pair of same-sex marriage cases at the U.S. Supreme Court.
But it is the Proposition 8 case from California that poses the thornier questions for the administration — questions so difficult that the president himself is expected to make the final decision on what arguments the Justice Department will make in the Supreme Court.
Whenever Tyler Perry is in front of the camera, he's usually behind it as well. A screenwriter, director, producer and star, Perry grew up poor in New Orleans, but he has become a movie phenomenon — he was described in the New Yorker as the most financially successful black man the American film industry has ever known.
This is SCIENCE FRIDAY; I'm Joe Palca. Do you ever get the feeling you're being watched? These days if you're not careful, your phone knows where you are, and there's a good chance somebody else does, too. Or you've noticed that the ads on sites you visit are starting to look a little too personalized, like how did they know I was planning a vacation to New Orleans.
You know the theory that a big collision, a comet or an asteroid, something like that, helped kill off the dinosaurs? The idea has been around for a while. But this week, new research published in journal Science provides more accurate dates for the giant impact and the dino demise.