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TIL that some trees accumulate toxic levels of heavy metals in their tissues as a form of defense

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via reddit.com

8eMp4 TIL about the unique tattoos designs the native Japanese people used to have
Y74OB TIL the brain can form false memories that feel as real and emotionally intense as true ones, activating the same brain regions and becoming resistant to correction once established.
5VrBB TIL that the first photograph of a person was an accident.
GAAEg TIL: The phrase “burning the candle at both ends” is in reference to Rushlights, cheaper versions of candles made out of grass dipped in animal fat. Burning both ends meant you were wasteful.
dwO8 TIL Jonas Salk’s polio vaccine could not be patented - on TV Salk claimed that he made the decision on moral grounds, but did not mention that his lawyers looked into patenting his polio vaccine, but determined it “could not be patented because of prior art”