New research shows invasive species are reducing insect populations worldwide and weakening ecosystems people rely on.

A firefighter works to extinguish a wildfire in Keratea, near Athens, on the weekend - Copyright AFP CLARENS SIFFROY A firefighter works to extinguish a wildfire in ...

The dark green fritillary is struggling to keep up with the advancing phenology of plants that the caterpillar stage relies on, such as dog-violet and marsh violet. Credit: Charles J. Sharp, Wikimedia ...

KELLETTVILLE, Pa. ― Every year in late June, Peggy Butler and her husband, Ken, welcome visitors to rural northwestern Pennsylvania for the chance to glimpse the rare and beguiling Photinus carolinus.

Insects are often seen as invaders due to high-profile species like the yellow-legged (Asian) hornet, the harlequin ladybird ...