invasive species

In 2013, the government began a program to get rid the rodents from the subantarctic island, which is a World Heritage Site that is home to dozens of unique and endangered species.

Nutria can grow up to 2.5 feet, weigh 20 pounds and wreak destruction wherever they go. State authorities believed they were extinct but recent sightings have led to a call for the public to help.

The armored catfish erodes shorelines and devastates marine plants — and its numbers have exploded. So researchers, chefs and fishermen are trying to rebrand it by promoting its flavor and nutrition.

Scientists are experimenting with species' environmental DNA to find out how far and how fast it travels in streams. The technology is starting to revolutionize how we protect native animals.

Developing countries have been invaded by 200-pound Nile perch, pretty flowers and beavers. A new study asks: What's the impact?

For decades, New Zealand has tried to reduce the populations of destructive, non-native predators. Now the country has a more ambitious goal: eliminating invasive rats, stoats and possums by 2050.