The study is published in the journal Science. The chart shows the relative ups and downs in species counts, telling ...

Conservationists were cheering last week as US President Barack Obama signalled that he would take a fresh approach to the Endangered Species Act (ESA) compared with his predecessor. But ...

In recent years, about 40–50 per year. This chart is generated from my database and shows the number of new living mammal species described by year. By my count, there are currently 6602 ...

Another chart shows the number of species deemed threatened or endangered in the U.S. over 56 years, based on data from the U.S. Fish and Wildlife Service. The status of a species may have changed ...