40% of animals, 34% of plants in US are at risk of extinction
Everything from crayfish and cacti to freshwater mussels and iconic American species such as the Venus flytrap is in danger of disappearing.
FILE PHOTO: A grizzly bear and her two cubs approach the carcass of a bison in Yellowstone National Park in Wyoming, United States, July 6, 2015.(photo credit: REUTERS/Jim Urquhart/File Photo)ByREUTERS
