Crack open any biology textbook, and you’ll find tidy diagrams, clean labels, and plenty of comforting facts about the human ...

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, ...

The human body is eerily similar to a complex machine, with countless delicate parts. These parts range from the tiniest of cells to our limbs, eyes, kidneys, and brains. These parts have slowly ...

From toes to tongues, discover the surprising body parts that have lifted extraordinary weights in Guinness World Records ...