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TIL that there is an extinct species of shark that had teeth resembling a buzz saw

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JYjwj TIL you are more likely to be hit by lightning than become a billionaire
e07Ak TIL while Richard Nixon was on a trip to the Soviet Union in 1959, high levels of radiation were detected the room he was staying in. Secret Service purposely argued about the radiation and how to handle it in an area they knew the Soviets had bugged. Three hours later, the radiation disappeared.
grvmy TIL the Swedish military goes by mission command rather than chain of command. Meaning orders & rules can be ignored if they interfere with objectives. This led to some friction in Bosnia as Nordbat 2 would ignore UNs rules of engagement to obtain the primary objective of preserving civilian lives.
mxv1o TIL that Cormac McCarthy's novel Blood Meridian contains so much violence that it is considered "unfilmable" - a notion that McCarthy himself denies.
W7oZL TIL The Clay Mathematic Foundation offers 1 million dollars to anyone to solve this equation. The Riemann Hypothesis. σ (n) ≤ Hn +ln (Hn)eHn