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 ...

NASCAR Terms Explained: 10 Phrases Every Fan Hears During a Race

Dirty air, loose, drafting, green-white-checkered. NASCAR broadcasts are full of terminology. Here are 10 NASCAR terms every ...