Gasp! Fascinating Facts About Breathing

Lungs above open hands.

You may survive without food for a few days, but without breathing, you may perish within a few minutes. (Image: Nataliia Mysik via Dreamstime)

Breathing? You Have Volcanoes, Tectonics, and Bacteria to Thank

Earth's atmosphere.

Earth’s atmosphere as seen from the International Space Station July 20, 2006. (Image: via NASA)