Image caption: The parasitic flatworm Haplorchis pumilio produces non-reproductive soldiers (left) which have much larger mouths than their reproductively capable colony-mates (center). The soldiers ...

Certain parasitic worms survive by taking control of snail behavior. Instead of hiding, infected snails are driven into exposed areas where predators can easily find them. The worms manipulate ...

This story was originally published by Grist. Sign up for Grist’s weekly newsletter here. Proof of Concept is a video series profiling the science and scientists behind some of the environment’s most ...

An invasive, dog-killing parasite is now lurking in Southern California. In new research this week, scientists say they’ve confirmed the newfound spread of the flatworm Heterobilharzia americana to ...

When Chelsea Wood was a child, she would often collect Periwinkle snails on the shores of Long Island. “I used to pluck them off the rocks and put them in buckets and keep them as pets and then ...