In the lab, the presence of earthworms can reduce the number of leaves damaged by slugs by 60 percent, a new study finds
On the landmark species-saving law’s 40th anniversary, environmental historian Peter Alagona explains why it doesn’t work and offers a path toward recovery
These delicate and stunning creatures are offering Smithsonian scientists a warning sign for the world's waters turning more acidic
A gator can replace all of its teeth up to 50 times--learning what triggers these new teeth to grow may someday keep us from needing dentures
Since 1996, scientists have found the oldest fossil insect, the largest living bug, a new taxonomic order and more
The newborn seal pups possess the most well-developed brains compared to other mammals, but that advantage comes with a cost
A behind-the-scenes look at the ways the National Zoo assists Washington's most famous sexually frustrated bear couple
With their new yard baby-proofed, the two cubs took the outside for a day in the rain before their public debut Saturday
A new Asian Elephant will soon arrive at the National Zoo, on loan from the Baton Rogue Zoo
The National Zoo's sloth bear cub is now called Hank
Agriculture, pollution and hydroelectric development threaten many great rivers. See them while they still flow, via raft, kayak, canoe—or bicycle
This seemingly horrific reproduction strategy may be a way for females to better control which males sire her offspring
Setting aside additional protected areas and creating forest corridors could help this Asian primate bounce back from just 110 individuals
Which penguin swims the fastest? Do penguins have teeth? Why do penguins sneeze? How is penguin poop useful?
If you've entertained ideas of boundless romping in the woods with your pet, you may be in for a serious letdown
Flamingos, shrimp and many other animals use chemical compounds found in their diets to color their exteriors
To help anticipate the next outbreak of an emerging infectious disease, scientists scrutinize our closest relatives in the animal kingdom
Here are six ways to experience the greatest scenery of America's neighbor to the north
From a fish's dyed nerves to vapor strewn across the planet, images submitted to a contest at the university offer new perspectives of the natural world
Pigeon-eating catfish, Antarctic trash, and more: A list of surprising, alarming and exciting discoveries about our planet from the past year
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