A rare Hawaiian tree snail returns to the forest after decades of extinction in the wild, marking a key conservation milestone.

The investigative minds at How to Survive explain how a small mollusk uses a venom-filled harpoon to paralyze its prey and why there is no known antivenom for humans.

Partula snails all but vanished from Polynesia after the arrival of a carnivorous foreign snail. But a global alliance of zoos has worked to bring them back.

Florida’s growing towns are helping a giant Cuban lizard spread—putting native insects and fragile ecosystems at risk.