See how ants changing colors with vivid fluid and colorants.

Some wasps are unsettling, and then there are species so extreme that even the scientists who study them reach for words like ...

For this installment of "From the Archives," we answer a reader question about the monk parakeets and grackles in Austin.

Michigan sports eight species of maples (Acer spp.), with only one alien, Norway maple. Together, maples comprise about one ...

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

Erik Irmer has been documenting the spread of invasive plant and animal species that disrupt native ecology across Europe. He focuses on humans’ interactions with these plants and animals. Aliens is p ...

“Six years into its North American invasion, the elm zigzag sawfly ( Aproceros leucopoda) is making waves – or, more ...

The arachnophobes have come to a decision: jumping spiders can stay. The other spiders must leave, but jumping spiders are ...

When you think of birds, you might imagine wings flapping silently against a blue sky. The kākāpō, however, lacks these ...