What you eat ends up in your hair. Scientists in the US and Europe have used this basic idea to devise a sort of hair-based GPS tracking system. Law enforcement agencies are now using this technique to solve crimes. NOVA's Ari Daniel Shapiro reports.
British explorer Sir Ranulph Fiennes is preparing an assault on Antarctica. He'll attempt to be the first person to successfully march across Antarctica on foot in the middle of winter. No person has gone more than 60 miles inland in winter.
A team led by British explorer Sir Ranulph Fiennes has announced to do six month ice trek and cross 2,000 miles via the South Pole to McMurdo Station. Can you name this partially frozen southern sea that wraps around this coastline of Antarctica?
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.
The news about climate change comes rather like snowflakes in a blizzard-from all directions at once, and accumulating in such overwhelming amounts and impact that it can be hard to know where to start digging out [...]
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.