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TIL glass is permeable for hydrogen ions, like a sieve

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wLDv8 TIL there is an estimated 10 quintillion individual bugs alive on earth right now
MgbV TIL That Irena Sendler was a remarkable woman who defied the Nazis and saved 2,500 Jewish children by smuggling them out of the Warsaw Ghetto. The Nazis eventually discovered her activities, tortured her brutally, and sentenced her to death, but she managed to evade execution and survive the war.
KOgJR TIL that one McDonalds in Sedona, Arizona, has blue arches instead of yellow, to prevent distraction from the surrounding natural scenery.
P1OJg TIL That Chemical Lasers Harness the Light from Chemical Reactions Rather Than Electric Light, and They Are Far More Powerful than Their Electric Sisters
BrpLy TIL that the box jellyfish has 24 eyes, two of which are capable of seeing color, and four parallel information processing areas that act in competition. This makes it one of the few creatures to have a 360-degree view of its environment.