Welcome to SCIENCE FRIDAY. I'm Ira Flatow. Thinking about a tattoo? Well, forget butterflies, unicorns or mom. Tattoos have gone geek. No more of those blurry anchors and pinup girls. We've got molecules, double-helix strands, mathematical equations all showing up on biceps and other places.
This is TALK OF THE NATION. I'm Neal Conan, in Washington. A police officer draws a weapon and fires. We see that on TV dramas every night. But what actually happens afterwards? Do investigators check the flight of every bullet? What kind of questions do officers face, and what kind of sanctions if they messed up?
The Marine Corps has identified at least two of the four Marines in a video that surfaced last night as Marines based at Camp Lejeune in North Carolina. The video shows four U.S. Marines in Afghanistan in full combat gear, standing over the corpses of three men, laughing and urinating on the bodies. The audio is difficult to understand.
(SOUNDBITE OF YOUTUBE VIDEO CLIP)
UNIDENTIFIED MAN #1: Here's the tough guy (unintelligible).
This is TALK OF THE NATION. I'm Neal Conan, in Washington. It's now almost four decades since the Supreme Court's famous and controversial ruling that legalized abortion. In recent years, opponents have stepped up efforts to challenge Roe v. Wade in Congress and state legislatures, in court and at the ballot box, last year in particular.