› added 6 years ago

96

TIL that the core of the Earth is about 2.5 years younger than the crust. This is due to gravitational time dilation, a consequence of General Relativity

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LxrZ TIL a “Vomitorium” is a corridor or space that allows people to rapidly exit a stadium.
4kNpX TIL that extended Cigarette holders had many useful purposes.
OGG71 TIL that just less than a century ago, astronomers weren't sure that the universe expanded beyond the Milky Way. Edwin Hubble (for whom the Hubble telescope was named) definitively proved the universe was far more vast.
oBDPW TIL Wearing sunglasses can improve your mood. Squinting your eyes in bright sunlight convinces your brain you are in a negative mood because people squint when they are angry. Wearing sunglasses can prevent you from squinting, and from involuntary frowning due to bright sunlight.
R7vxa TIL No more stinky socks if someone invents shoe insoles made with copper