One of the ways our ears can differ is in the presence of what’s known as Darwin’s tubercle, a small bump on the outer ear that's thought to be an evolutionary hangover. A 2016 study found ...

Roshini Raj, MD, is Health's former magazine's medical editor and coauthor of What the Yuck?!. Board-certified in gastroenterology and internal medicine, Dr. Raj is a Clinical Associate Professor ...