A graphic on the global wildlife population that should shame us all

Worldwide populations of mammals, birds, fish, amphibians and reptiles have plunged by almost 60 percent since 1970 as human activities overwhelm the environment.

If the trend continues that decline could reach two-thirds among vertebrates by 2020, the WWF conservation group has warned.

Shameful or what!

READ MORE ON THIS STORY: Global wildlife faces mass extinction as populations fall by over two thirds