Invasive Species

The South Georgia pipit has been one of the hardest-hit species by the island's rodent population. The government announced Monday that the island is now rodent free.

South Georgia Island Is Officially Free of Its Bird-Killing Rodents

After 250 years plagued with rats and mice, the island's birds will hopefully now have the chance to bounce back

California Is Asking Residents to Report Sightings of Giant, Invasive Rodents

Nutria breed prolifically and they are absolute menaces

Nilgai antelope, like the cattle fever ticks they carry, are considered an invasive species in places like Texas.

Why We Should Rethink How We Talk About "Alien" Species

In a trend that echoes the U.S.-Mexico border debate, some say that calling non-native animals "foreigners" and "invaders" only worsens the problem

Japanese sea slugs that washed ashore in Oregon in 2015

New Research

The 2011 Tsunami Flushed Hundreds of Japanese Species Across the Ocean

After the Fukushima disaster, a surprising number of coastal creatures survived a multi-year journey by clinging to floating debris

A pin-tailed whydah in Africa

New Research

This Beautiful Species Could Be Trouble for Native Birds

Analysis shows that the parasitic pin-tailed whydah could impact native birds in the Caribbean, Hawaii and the southern U.S.

The fire ant has spread like wildfire around the world, thanks to a winning combination of traits and a little help from humans.

New Research

How Humans Helped Ants Invade the World

Waves of globalization brought these warriors to new shores, where certain species spread like wildfire

Pyrosoma atlanticum floating off of Santa Cruz Island.

Hordes of Gelatinous “Sea Pickles” Are Invading the West Coast

Usually a rare creature, no one yet knows the reason for the influx of the light-emitting creatures

Today the desert tortoise faces a variety of new human-associated threats: off-road vehicle use, the illegal pet trade, and now, an influx of deadly ravens.

Future of Conservation

To Save Desert Tortoises, Make Conservation a Real-Life Video Game

Traditional techniques weren't working for the raven-ravaged reptile. So researchers got creative

Every cupful of pond water is swirling with DNA sequences. Now, scientists are putting them to work to solve stubborn conservation mysteries.

Future of Conservation

How Scientists Use Teeny Bits of Leftover DNA to Solve Wildlife Mysteries

Environmental DNA helps biologists track rare, elusive species. It could usher in a revolution for conservation biology

Equus first evolved in North America millions of years ago.

How the Mustang, the Symbol of the Frontier, Became a Nuisance

A mainstay of Western culture, the free-roaming stallions are now a force to be reckoned with

Among all those poppies is something less beautiful—noxious, invasive weeds.

Trending Today

After Intense Downpour, Superblooming California Has a Problem

In a word: weeds

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Prince Charles Will Battle Squirrels Using Contraceptives and a Lot of Nutella

North American gray squirrels are decimating native red squirrels in the British Isles, leading to a new plan to reduce the population of invasive mammals

The Javan myna is critically endangered in its natural Indonesian habitat, but exploding populations in Singapore have made it a nuisance there.

New Research

How Escaped Exotic Pet Birds Could Help Save Threatened Species

Though usually seen as a threat to local populations, these escapees could also help in the recovery of creatures in trouble

How Yellowstone Scientists Really Combat Invasive Species

Yellowstone cutthroat trout are on the brink of extinction as invasive lake trout continue to eat them

Researchers fear that these normal monk seal encounters could soon grow deadly.

Why Rare Hawaiian Monk Seals Are Lining Up to Get Their Shots

Fearing devastating disease, researchers are vaccinating a wild marine mammal for the first time

In the past few weeks, thousands of fish have gone belly-up.

The Massive Yellowstone Fish Die-Off: A Glimpse Into Our Climate Future?

This unprecedented kill reveals why we need to keep rivers resilient

We're gonna need a bigger tank.

Age of Humans

Ginormous Goldfish Are Invading Australian Rivers

Abandoned by their owners, the fish run rampant and impact the environment

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An Insect Could Make Ash Baseball Bats a Thing of the Past

The invasive emerald ash borer is threatening the forests where Rawlings and Louisville Sluggers come from, putting the bats in jeopardy

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EU Releases Its First Invasive Species Blacklist

Gray squirrels, raccoons and crayfish were among the prohibited species

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What's the Difference Between Invasive and Nonnative Species? Plus, More Questions From Our Readers

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