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TIL: on May 17th 1980 while observing Mt. St.helens Harry Glicken was replaced by David Johnston, 13 Hours later the mountain erupted killing Johnston , 11 years after this Glicken was killed in a different volcanic eruption, they are the only American volcanologist to die during an eruption.
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whatilearned
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TIL The half life of caffeine is 6 hours. Drinking a 16 oz red bull at 3pm will still leave roughly 75mg of caffeine in your body by 9pm which is more than enough to prevent REM sleep. The 6 hour half life is partly why a caffeine addiction is such a vicious cycle of no sleep and needing more
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whatilearned
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