› added 7 years ago

299

Short answer: It might be all in your head.

Read more popsci.com

Z8G64 TIL of Helenite, a green obsidian-like gemstone created accidentally after the Mount St. Helens explosion. Local timber workers were using acetylene torches to free equipment when they noticed that the heat was transforming the volcanic ash and rock into an alluring green compound.
x91o TIL in WWII the Russians trained dogs to run under German tanks with bombs on their backs. However, the tanks the dogs were trained to run under were Russian so they ended up running under the Russian tanks and blowing them up instead.
awkpy TIL Turtles can feel things that touch their shell, yet can't feel pain through their shell.
R5dQ1 TIL: There's a New Type of Glasses That Autofocus Automatically Based on What You're Looking At
woyoP TIL that the Earth rotates around its axis 366 times every year