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TIL about Earth’s oldest known natural Nuclear Reactor, located in Oklo, Gabon. It's around two-billion years old, and was thought to have been active for several thousand years. Its average power output was 100 kilowatts, enough to run a few dozen toasters.

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yVdDe TIL Little Ice Age (16th - 19th century) led to bad harvests, hunger & starvation for millions of people; increased disease and crime. The 17th century was marked by pronounced political instability and upheaval, such as the English revolutions & wars in Spain, Italy, China, and the Ottoman Empire.
4g4X TIL that Milk allergy is quite different from Lactose intolerance and can be problematic for young children due to ignorance of the differences
VMpO4 TIL when forensic science was in its infancy, a woman - who developed the legal medicine department in Harvard - created doll houses depicting crime scenes. These early tools were used to teach crime scene analysis.
ADb0a TIL Jackie Chan’s Father was a Spy and Mother was a Drug Dealer. They met through an Arrest.
GYJG1 TIL Lisa Nowak operated the robotic arm on the International Space Station and also became the first astronaut ever to be arrested. She is remembered for wearing maximum-absorption garments—government-issued astronaut diapers—during her 950-mile drive from Houston to Orlando