To protect endangered rhinos, U.S. Army veterans answer a new call to arms

Why Canada's summer of fee-free national parks is making conservationists anxious

Happy World Turtle Day

Sharks get star treatment in beautiful new photography book

What does it take to save an injured sea turtle?

Earth has 9% more forest than we thought

At biggest biosphere in N. America, humans live in harmony with nature

We just got our first State of Antarctic Penguins Report (and we have some work to do)

15 astounding facts about trees

Obama's national monuments are a big deal

The strange history of the man-eating lions of Tsavo

Can human rights save Mother Nature?