› added 4 weeks ago

10

TIL sharks have an "off-switch" — if you gently flip them upside down, they go into a trance-like state called tonic immobility.

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jNQea TIL that the world needs topsoil to grow 95% of crops, and we may run out of topsoil within the next 60 years.
b1Gp TIL The F-15 Fighter Jet Was Capable of Shooting Down Satellites in Orbit.
VZDp TIL In 2010, a Bitcoiner named Laszlo Hanyecz paid 10 000 BTC (about $25 at that time) for two pizzas. Now the bitcoins have a value of $6,5 million
0wmgy TIL In 1919, Fritz Pollard became one of the first African-Americans to play in the NFL.One year¹ after making his debut,Fritz led his Akron Pros to their first ever NFL championship.The next year,Pollard became a player-coach with the same team and in effect became the NFL's first black head coach.
OoAMg TIL that sunlight provides a protective effect against influenza and other viruses