The Asian longhorned tick, first found in the country last year, is now present in several states.

See how the tiny island of Guam became overrun with brown treesnakes, and learn what biologists are doing to try to eradicate the invasive species.

The introduction of the poisonous Duttaphrynus melanostictus into Madagascar could be fatally risky for the island’s native predators.

Research suggests that the invasive, all-female Procambarus virginalis originated in a German aquarium back in the 1990s.

A recently expanded online database allows researchers and the public to share and view videos of sea lampreys.

The elimination of the biting pests was an added bonus after researchers unleashed a rat-eradication endeavor on the tiny islands.  

An artist’s impression suggests what the Caribbean may have looked like before humans arrived. 

These insect transplants have the potential to wreak economic havoc by outcompeting native insects and destroying crops.

The invasive insects weathered extreme climatic conditions by banding together and riding out Hurricane Harvey's flood waters.

Explore the many facets of this invasive species.