Invasive Species

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Venomous Lionfish Invade the Mediterranean

A recent survey shows that the fish have colonized Cyprus and may continue to spread

Invasive kudzu girdles a forest.

Age of Humans

The Global Price of Invasive Species

The U.S. and China pose the greatest threat as exporters of invasive species, but other countries have more to lose

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Nile Crocodiles Have Moved to Florida

Three "unusual" crocodilians turned out to be more closely related to South African crocs than American ones

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Brawny American Lobsters Are Muscling in on Their European Cousins

Sweden wants to ban live American lobsters for fear they will out-claw their own

Argentine ants

New Research

Invasive Ants Could Be Beaten Back With a Targeted Virus

The idea is sound, but work needs to be done to ensure the virus doesn’t take out other insects as well

New Research

Invasive Rabbits Change the Soil so Drastically you Can See the Effects Decades Later

Remote French islands in the Indian Ocean have a bunny problem

Ten years on, some of the scars that Katrina tore into coastal ecosystems persist, while others have healed. NASA's Landsat 8 satellite captured this image of the swamps and marshes that buffer New Orleans in August 2015.

Age of Humans

How Hurricane Katrina Redrew the Gulf Coast

While storms here are nothing new, human influence helped Katrina make Louisiana’s ecological problems worse

Jumping worms are becoming more common in Wisconsin. This photo shows what is likely an Amynthas agrestis jumping worm in Pennsylvania, though its identification is unconfirmed.

Jumping Worms Have Invaded Wisconsin

A wriggling worm is becoming a problem in the Midwest

Pet goldfish in a tank, where it belongs

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Pet Goldfish Released into the Wild Are Getting Really Huge

Monster goldfish are trouble for native fish

An emerald ash borer, the problem the wasp is supposed to address

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Colorado Hopes This Asian Wasp Can Save its Trees

Researchers are hoping to use one non-native species to fight another, more destructive one

Hammerhead sharks off the coast of Cocos Island, Costa Rica. The island is known for its incredible terrain and marine life, and is said to be the inspiration for Isla Nublar, the place Michael Crichton created as the setting for Jurassic Park—and now Jurassic World.

Explore Extremes

Where to Visit the Real Jurassic World After You See the Film

The movie's filming locations and inspiration offer lush vegetation, stunning views and plenty of sharks

Cool Finds

Colorado Lake Teems with Feral Goldfish

Parks and Wildlife thinks a goldfish owner dumped his pets into a local lake. Now a few years later, the fish swarm the water in thousands

Cool Finds

The Children’s Book That Caused Japan’s Raccoon Problem

When the story of one man’s childhood pet raccoon became a hit in 1970s Japan, it heralded a biological invasion still troubling the country today

The tropical fire ant is the first known ant to travel the world by sea.

New Research

How 16th Century Trade Made Fire Ants an Early Global Invader

By inadvertently stowing away in Spanish ships, one pesky little insect quickly spread throughout much of the world

A yellow crazy ant

Cool Finds

Invasive, Acid-Spraying Ants in Hawaii Are Deforming Native Seabird Chicks

The ground-dwelling chicks are pestered by invasive ants spraying acid

A wallaby in the mist on the Irish island of Lambay.

What the Heck Are Wallabies Doing in Ireland?

Normally spotted in Australia, the marsupial species is thriving on a remote island off the Irish coast

An Espanola Galapagos giant tortoise under an arboreal prickly pear cactus. The cactus is a vital part of the tortoise's diet, but the surrounding woody plants - a leftover problem caused by goats - prevent the cactuses from regrowing.

New Research

Giant Tortoises Have Made a Comeback From 15 to 1,000

Española giant tortoises have been reintroduced to Galapagos National Park and are breeding on their own

New Research

Invaders From Cuba Force Florida Lizards to Quickly Evolve (Or Get Out)

In just 15 years, green anoles changed their behavior and evolved bigger, stickier toes to escape alien competitors

Cool Finds

Scientists Plan to Kill Off the American West's Tumbleweeds

Two species of fungus from Russia could be the bane of America's tumbleweed

Cool Finds

America’s Tumbleweeds Are Actually Russian Invaders

Some say the tumbleweed's takeover of the American West was the most aggressive weed invasion in our country's history