Snails have shells the moment they're born, but it's kind of hard to tell. In fact, it's hard to even see a baby snail. Some are nearly microscopic, such as Angustopila psammion, whose adult-sized ...

Snails (Gastropoda) are a stroke of luck for paleontologists: because of their hard shells, these animals are very often preserved as fossils. Snails therefore form an important and well represented ...

Environmentalists are urging federal officials to save a pair of Northwest species that you’ve probably never heard of. If you’ve seen one of them, you might have mistaken it for a pebble on the ...

Freshwater streams, ponds and lakes across the United States are becoming saltier, and new research from the University of Missouri shows the damage may be greater than scientists once thought.