U.S. forces have left Iraq and a drawdown in Afghanistan is underway, but both wars have left an indelible impact on the U.S. military. The armed forces have altered strategy and tactics, and countless lives have been changed — including those of the families of service members serving multiple deployments.
This is SCIENCE FRIDAY. I'm Ira Flatow. If you're scanning the Milky Way for life, where do you look? Well, probably someplace not too different from planet Earth, right? So you want to find a planet about the same size as Earth to increase the chance it has a rocky surface, with oceans of course rather than being a giant ball of gas like Jupiter, and it should be just the right distance from its star, in what they call the Goldilocks Zone: hot enough to have liquid water but not so hot that the surface has completely scorched.
The 112th Audubon Christmas Bird Count is underway. Citizen scientists armed with binoculars are recording data vital to monitoring bird health and conservation. But before you can count a Snowy Owl or a Rufous Hummingbird, you need to identify it. Birder Richard Crossley has some tips.
Forty years ago, President Nixon signed the National Cancer Act, beginning the War on Cancer. Harold Varmus, director of the National Cancer Institute, discusses four decades of scientific progress in preventing, detecting and treating cancer--and the mysteries that still remain.
Discarded plastic shampoo and juice bottles are finding new life in unlikely places--as bridges, railroad ties and pilings. Jim Kerstein, CTO and founder of Axion International, talks about how his company transforms plastic waste into structures strong enough to support trucks, trains and tanks.