Learn about Earth's biodiversity and natural resources. Plus: Explore national parks and state wilderness areas.
Video: Why are these earthworms running for their lives? Assignment Earth has the answer.
Chad Pregacke's passion for the Mississippi River is as strong as his passion for skateboarding, and he's turning it into action.
Thanks to humans, the once-rampant species is now endangered.
The world’s only flying mammals are an all-natural form of pest control.
Rising temperatures affecting tuatara populations.
Researchers hope to save India's critically endangered Brow-Antlered deer from inbreeding, which could cause harmful genetic defects.
Trees benefit us in more than just the ways that you already knew.
Human population growth in arctic areas negatively impacts polar bears.
And other tales of nuisance species.
Is saving the Amur leopard a losing battle?
A research project uses tourism dollars to fund research on Morelet’s crocodiles.
An astonishing percentage of the world's species face the threat of extinction.
Butterfly species around the world are being threatened by climate change and loss of habitat.
Endangered California condors are dying after ingesting lead bullet fragments.
One of world's largest butterflies faces extinction.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.