Biologists say the appendix isn’t useless after all. Evolution kept reinventing it, and it may help support gut immunity and ...

Lead poisoning has plagued millions of people ever since the world became industrialized, but humans' troubled relationship with the toxic metal goes back much further in time. Our ancient ancestors ...

Something happened around 4,000 years ago in West Eurasia that made red-haired people more common.

Woodrats weigh less than half a pound but can survive venomous rattlesnake bites that would hospitalize, or even kill, a full-grown human. New research from the University of Michigan has uncovered a ...