Water is a big part of our lives. Whether we're swimming in it, washing ourselves off with it or drinking it, human beings need water to survive. The average U.S. adult drinks about 44 ounces of water ...

An old Chinese proverb goes, “If you want to know what water is, don’t ask a fish!” The idea is, a fish has never lived outside its watery world; it’s too close to be objective, taking it for granted.

What do the brain and a school of fish have in common? They are both capable of efficient collective information processing, although each unit within them only has access to local information. In the ...