Snails whose shells coil counterclockwise have trouble hooking up with snails whose shells twist clockwise since their bodies don't line up properly. Turns out, the contrary snails trade awkward sex ...

While people and many animals might look pretty symmetrical on the outside, inside our bodies we are all fundamentally asymmetric. For example, the human heart is found to the left of center. Snails ...

A tiny snail trapped in ancient amber has scientists puzzling over the usefulness of hairy shells. Could they make the critters more sexually attractive? Freelance writer Amanda C. Kooser covers ...

Berkeley -- Biologists have tracked down genes that control the handedness of snail shells, and they turn out to be similar to the genes used by humans to set up the left and right sides of the body.