Bromus diandrus and Bromus tectorum in Zion National Park

The Greening of the Great Basin

The growth of grass in a desert might not seem problematic, but the introduction of invasive species can disrupt plant, animal, and human inhabitants.
A Cane Toad is exhibited at Taronga Zoo August 9, 2005 in Sydney, Australia

Cane Toads, Dung Beetles, and Cork Hats

Predicting the effects of introducing a species into an ecosystem is difficult. Mitigating those effects later is even more so. Just ask Australia.
The oriental fruit fly, Bactrocera dorsalis

The True Costs of Invasive Species

The time between species arrival and the onset of management is critical to determining the ultimate cost of an invasive species.
Ship sunset cruise on the Antarctic peninsula

Antarctica Is Warming. Are Invasive Species on the Way?

Algae, crustaceans, and other types of organisms can hitchhike into new ecosystems under the hulls of ships.
Small white flowers bloom on the end of a cherry tree branch near the base of the Washington Monument in Washington, DC.

Is Your Favorite Tree an Invasive Species?

Some superstar trees in the US are actually invasive to their ecosystems. Blossoming cherry trees, for example.
A composite image of a grey squirrel and a red squirrel

Can CRISPR Save Tufty Fluffytail?

The native red squirrel population in the UK has been decimated by the encroachment of its American cousin, an invasive species. Could a "gene drive" help?
Callery Pear Trees in bloom

When a Cultivated Tree Goes Rogue

The Callery pear was meant to help prevent fire blight from destroying the commercial pear industry. Then it became invasive.
dna illustration

A Primer on e-DNA

eDNA is DNA that an animal sloughs off into its environment through feces, shedding, or lost skin. The technology can detect invasive species.
Indian Chicken Shop

Is Human Mistreatment of Animals Killing Our Planet?

Most people treat animals as tools for improving human lives. But recent reports reveal (mis)treatment of animals is harming the planet as a whole.
European Starlings

What If We Had All the Birds from Shakespeare in Central Park?

According to birding lore, two of America's most invasive bird species were introduced by a misguided Shakespeare fan named Eugene Schieffelin.