First discovered by Charles Walcott in 1909, the Burgess Shale is a UNESCO World Heritage site containing fossils dating back to the Cambrian period, 505 million years ago. This site provides the history of this area and information on...

Although the whooping crane has survived for 3.5 million years, it has become endangered in the last few hundred due to human activities. At its lowest, there were only 15 on the whole planet. The number now stands at several hundred in...