On Friday, June 3, activist and Yellowstone grizzly expert Doug Peacock asked the White House to add the iconic animal back to the endangered species list. With the help of luminaries like E.O. Wilson and celebrities like Harrison Ford, he's hoping to get the federal government's attention.

The animals currently face two great threats to their survival: global warming, and the U.S. government

The trail to some sort of personal peace seemed to wend high into the Himalayas. But where it led was back to an old friend.

A bear expert's risky research ends in disaster. Should anybody get so close to grizzlies?