Investigate

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

See You Later, Not-an-Alligator

Pigs to the Rescue: An Invasive Species Helped Save Australia’s Crocodiles

Death Valley’s Invasive Donkeys Have Become Cat Food

The World’s Largest Hornet Is Getting a New Name

The Shakespearean Tall Tale That Shaped How We See Starlings

Cannibalistic Toads Reveal ‘Evolution in Fast Motion,’ Study Finds

Meet the Spongy Moth, Whose Old Name Contained an Offensive Term

How a Gecko From Africa Crossed the Atlantic Ocean

Caring for the Wildlife That Stray Into the Suburbs

New Red Algae Are Threatening Hawaii’s Coral Reefs, Scientists Say

The Invasion of Antarctica Begins With Mussels

Could an Invasive Snail Save Your Morning Coffee?

One of Nature’s Smallest Flowering Plants Can Survive Inside of a Duck

Lanternflies Eat Everything in Sight. The U.S. Is Looking Delicious.

The Green-Feathered Terror That Slaughtered Bats in Spain

Things Looked Bleak Until These Birds Rapidly Evolved Bigger Beaks

‘Gene Drives’ Are Too Risky for Field Trials, Scientists Say

After the Tsunami, Japan’s Sea Creatures Crossed an Ocean

Invaders From the New World