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TIL that birds have a unidirectional, four-stroke respiration system. They have posterior and anterior air sacs that fill the lungs and receive deoxygenated air during each part of the inhale/exhale cycle. This process is highly efficient as it keeps the lungs constantly full of oxygenated air

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pA14 TIL that police shot and killed at least 94 pet dogs in the U.S. in 2000. By 2008, that number spiked to 681. And through October 2014 there were at least 510 dog shootings by cops.
4km0g TIL that Human Skin is actually toxic to Earthworms
grLDb TIL that some older variants of the AIM-9 Sidewinder were prone to locking onto various heat signatures to include the sun.
LQQKp TIL that the term "fundamentalism" was coined in 1920, and was named after a series of 12 Evangelical protestant pamphlets called " The Fundamentals: A Testimony to the Truth." The pamphlets argued that the Bible was the literal and inerrant word of God.
b9pAp TIL When Harry Wilson 18 months old, his proud Grandfather bet £50 that he would on day represent Wales in football and was quoted 2500/1 at his local bookmaker. 16 years later he became the youngest ever Wales debutant , netting his grandfather £125,000