Rachel Feltman: For Scientific American’s Science Quickly, I’m Rachel Feltman. Humans have been trying to replace ailing parts of our bodies for thousands of years, turning to prosthetic limbs, ...

So the mathematician's answer is that humans have either seven or eight holes. In the end, the question is not just about ...

A selection of science-based books from the year that together shine new light on who we are and why we think and act as we do.

Looking to inspire the next generation of curious minds? These are our picks of the best popular science books for children of all ages. When you purchase through links on our site, we may earn an ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Each human is a ...