› added 1 day ago

TIL dolphins and some birds can sleep with only half their brain, while the other half stays awake. They may shut one eye while doing this.

Read more wikipedia.org

via reddit.com

j61kv TIL In certain situations (the conditions of which are still up for debate) warm water has been observed to freeze faster than cold water, as the result of what is known as the Mpemba effect. These observations go far back enough to be traced to claims by ancient philosopher Aristotle.
oAA TIL that owls are unable to move their eyes in any direction.
aw77y TIL: Hummingbirds' metabolism rate is so high that they will starve to death in two hours if they don't feed.
WkW8N TIL that a Chinese man lost his ability to speak after faking muteness for 12 years.
NweM TIL that Zambia had a space program in the 1960s. It consisted of a grade school science teacher, a teenage girl and her cat, and a missionary.