What does the appendix do? Biologists explain the complicated evolution of this inconvenient organ

Most people know only two things about the appendix: You don’t need it – and if it bursts, you need surgery fast. That basic ...

Evolution of new physical traits in mollusks has declined and grown more predictable over time

Paleobiologist Geerat Vermeij is enthralled with mollusks. Their shells line the surfaces and fill the cabinets and drawers in his office on the second floor of the Earth and Planetary Sciences ...