Mountain lions are appearing all across New York — but no one can explain why

Giant Sequoias Leave California and Thrive in Scotland — Because Their Old Home Is Changing

Dead Fish Cover the Shore of America’s San Carlos Lake — And the Scariest Part Isn’t in the Water

Florida Birds Keep Dying Mysteriously — The Truth Points To A Plant Invading The Everglades

Water Hyacinth Vanishes From U.S. Rivers — The Swamp-Swallowing Flower Meets Its Match

Rattlesnakes Turned Up Dead In The Desert — The Tracks Revealed A Culprit That Surprised Ecologists

Lionfish Had No Rivals For 40 Years — Until A Predator From The Sky Appeared

The U.S. Removed a 162-Year-Old Dam to Save a River — Later, Over 9 Million Fish Returned

The Lynx Has Finally Returned To Europe — After More Than 100 Years, A Lost Predator Is Back

Millions Of Iguanas Are Vanishing From America — The Once-Unstoppable Invader Has Met Its Match

They Used Sharks To Eradicate Lionfish — But What The Sharks Learned Was Even More Dangerous

New Zealand Moved The Last 51 Kakapo Parrots To A Remote Island — Then A Miracle Happened

America’s Most Dangerous Wasp Is Being Wiped Out — And The Trail Leads To A Hunter From Asia

Invasive Lionfish In Florida Are Mysteriously Disappearing — Underwater Cameras Reveal Giant Culprit

The UK Brought 4,000 Oysters Back To A Biologically Dead River—What Happened Next Amazed Scientists

The Animal Americans Once Called A Destroyer — But It Is Digging Water To Save The Desert

UK Released 2 Beavers Into A Heavy-Metal River — What They Did Surprised Everyone

This Is How Invasive Species Turned A Barren Island Into A Lush Green Paradise

How Chicago Coyotes In The United States Quietly Help Balance The Urban Ecosystem

What Trail Camera Revealed About American Jaguars Shocked Researchers About The Predator Once Erased

Argentina Brings Jaguars Into A Capybara-Controlled Region — And This Is What Happened

Thousands Of Caribbean Lionfish Are Dying From Mysterious Skin Ulcers—The Truth Has Biologists Alert

Brazil Released An African Fish Into Fish Farms… And Then Only 20% Of Native Fish Remained

The U.S. Released 5 Beavers Into a Drying Desert Stream — And They’re Doing What No One Expected

How 3 Dutch Bison Did What Machines Couldn’t Do For 40 Years

5 Cows Were Left Behind In The Indian Ocean — A Few Generations Later, Scientists Were Astonished

China Used Thousands of Ducks Instead of Spraying Machines — Rice Fields Began Reviving

Canada Released 274 Wild Turkeys Into a Degraded Forest — Years Later, It Began to Recover

Africa’s Deadliest Venomous Snake Is Being Killed In Masses —The Culprit Has Left Scientists Stunned