An enzyme that makes the male sex hormones has unravelled a fresh clue about how snail shells come to be curly. It's a new twist on how scientists thought snails and molluscs develop and form their ...

As stars age, they often shed their skins, so to speak, casting off expansive shells of dust and gas into interstellar space. As stars age, they often shed their skins, so to speak, casting off ...

Sea shells are abundant on the New Jersey shores. There are the black ridged scallop shells that look like accordion fans, the pretty and delicate spiral shells that come in various patterns and ...