A few interesting facts about flying squirrels

Meet 9 species named after Obama

Hordes of insects migrate overhead each year

Hawaiian crows return from extinction in wild

Americans are quietly preserving 56 million acres of private land

How tiny wasps could save the Christmas Island red crab from invasive crazy ants

Like bees of the sea, plankton pollinate plants

7 interesting facts about Lucy the ancient ape

5 invasive species that may have won the war

11 facts about North America's temperate rain forests

The controversy behind the world's next great telescope

11 incredible facts about lemurs