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TIL a mediterranean sea is a mostly enclosed sea whos water circulation is dominated by salinity changes, so TIL The Mediterranean sea is a mediterranean sea.

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k7LW TIL Eastern Russia has a “Valley of Death” where volanic hydrogen sulfide gasses displace all oxygen for a metre or so above ground level. This kills animals which attracts scavengers who are also killed in an endless chain of death.
69W1Q TIL just 4 religions: Christianity, Islam, Hinduism, and Buddhism, account for over 77% of the world's population, and 92% of the world is one of those religions or nonreligious, meaning that the other 9,000+ faiths account for only 8% of the population combined.
oBQd8 TIL that in 1982, Queen Elizabeth the Queen Mother was rushed to hospital when a fish bone became stuck in her throat, and she ended up having an operation to remove it. Being a keen fisher, she calmly joked when it was done: "The salmon have got their own back".
DGrJ TIL even though Calculus is often taught starting only at the college level, mathematicians have shown that it can be taught to kids as young as 5, suggesting that it should be taught not just to those who pursue higher education, but rather to literally everyone in society.
O49a TIL a New Zealand school ditched schoolyard restrictions on play, and saw a drop in bullying, serious injuries and vandalism, and concentration levels in class increase. Instead of a playground, children play in a “loose parts pit” which contains junk such as wood, tyres and an old fire hose.