› added 1 month ago

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TIL that a black hole is a sphere. Not sure why I didn’t think of that before, but the 2D pictures I’ve seen all my life didn’t help 😂

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GApdN TIL there is no blue or green pigment present in the human eye. Eyes appear blue or green due to Rayleigh scattering, the same phenomenon that makes the sky appear blue. For this reason, blue eyes and green eyes can appear to change color depending on lighting.
Ropj TIL in 2008 the Norwegian Government donated $1bn to help save the Amazon rainforest.
dxnQ TIL that, in 1957, a terminal cancer patient was given a worthless drug that caused his tumors to “melt like snowballs on a hot stove.” When he found out it was proven worthless, his cancer returned. He was given a placebo version and it went away again. He learned the truth, then died soon after.
mnOO TIL the Environmental Protection Agency (EPA), much like the FBI, has its own list of most wanted fugitives.
v1DmK TIL Covered bridges are designed with roofs to protect and preserve the wooden structure from the elements. Uncovered wooden bridges typically have a lifespan of only 20 years because of the effects of rain and sun, but a covered bridge could last 100 years