Romania center explores world's most powerful laser

"Ready? Signal sent!" In the control room of a research center in Romania, engineer Antonia Toma activates the world's most powerful laser, which promises revolutionary advances in everything from the health sector to space.

Early spring, earlier nesting birds

Did spring arrive early this year? Some people think so. Apparently, some birds do, too. The NestWatch project at the Cornell Lab of Ornithology documents when and where birds are nesting.