Why Canada's summer of fee-free national parks is making conservationists anxious
June 1, 2017, 11:47 a.m. by Matt Hickman
Sometimes sesquicentennials can have major consequences.
Western forests might one day look more like Eastern forests, thanks to climate change
May 17, 2017, 10:24 p.m. by Bryan Nelson
Several species of tree common in the Eastern U.S. are steadily moving west.
Little girl found living with the monkeys in Indian jungle is making progress
April 7, 2017, 11:28 a.m. by Mary Jo DiLonardo
The real-life Mowgli apparently had been with the animals since birth.
Are these massive tunnels in South America the work of giant sloths?
March 31, 2017, 11:01 a.m. by Angela Nelson
So-called paleoburrows were hundreds of feet long with claw marks on the walls.