Goosebumps arise when tiny muscles around hair follicles contract, causing the hair to stand on end. Learn what triggers them ...

Hakeem Oluseyi, host of NOVA and GBH's podcast Particles of Thought, breaks down how his show tackles some of science's biggest and strangest questions. Sometimes the daily rigmarole of life gives us ...

Have you ever noticed small bumps rising on your arms when you feel chilly or hear a powerful song? These are called goosebumps, a common reaction that happens to everyone. Goosebumps may seem odd, ...