Unmanned aerial vehicles have become popular tools in America's wars, but that technology is working its way back stateside. Already, there are a few domestic uses of drones, mostly by law enforcement and the military. But manufacturers have much bigger ideas in mind.
A new census of emperor penguins has found that there are roughly twice as many as had been estimated. The new numbers don't change the fact that Antarctic penguins are seriously threatened by climate change. Host Lisa Mullins speaks with Michelle LaRue.
There's an odd feeling of deja vu these days on the environment beat. First came the awful events in Japan with a nuclear disaster on a scale unseen since Chernobyl in the 1980s. Now comes news about atmospheric ozone that takes us back to the 80s as well
Antarctica has long been considered a last redoubt of cold in a warming globe. But new science suggests that a key part is warming up fast. Sam Eaton reports the finding could cause scientists to rethink their sea level projections for later this century.
Those on the Spirit of Mawson Antarctic expedition were relieved and jubilant when they were rescued last week after being stranded on a ship caught in Antarctic pack ice. But some polar scientists were not as jubilant. They question the trip as more a lark than a serious expedition — which diverted several icebreakers from serious scientific work.
Seals spend a lot of time in the water — which makes them nearly ideal vehicles for gathering data on ocean currents and changes in ocean conditions. But doing that requires a little bit of cooperation from the seals.
Floods in the Australian state of Queensland exacted a terrible toll last December and January. But one part of the Australian state welcomed the floods and is now thriving: The Outback. The World's Jason Margolis has more from Australia.