Investigate

Once They Were Pets. Now Giant Goldfish Are Menacing the Great Lakes.

Rare Giant Rat Is Photographed Alive for First Time

Why Warblers Flock to Wealthier Neighborhoods

Wildlife Personalities Play a Role in Nature

New Zealand’s Sea Lions Are Back, and Crashing Golf Courses and Soccer Matches

The Case of the Disappearing Cicadas

Using Wolves as First Responders Against a Deadly Brain Disease

Robert May, an Uncontainable ‘Big Picture’ Scientist, Dies at 84

Pablo Escobar’s Hippos Fill a Hole Left Since Ice Age Extinctions

Lee Botts, Champion of the Great Lakes, Is Dead at 91

Squirrels Relax When They Hear Birds Relaxing

Humans Dominated Earth Earlier Than Previously Thought

Wanted: Old Chimney, Suitable for Roosting

Setting Fires and Restoring an American Landscape

Researchers Offer Solution to Puzzle of Sea Snakes With Jet-Black Skin

Earth in Suspension

Let Forest Fires Burn? What the Black-Backed Woodpecker Knows