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TIL in the 1950s a scientist used a mirror to focus the enery from a nuclear explosion to light his cigarette

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awV8A TIL of Machine Identification Code (MIC), a pattern of yellow dots color printers add to their output that has metadata about the printer, the document and the operator. Its existence was secret for more than 15 years.
dJRE TIL that Cards Against Humanity bought an island and named it Hawaii 2
9Y4QX TIL about Saturators. Saturators were popular in communist Russia. They would dispense sodas, water, carbonated juices, etc. However instead of cans, the drink was dispensed into a reusable glass tied to a chain which you had to wash before each use.
awJMA TIL Seinfeld, Mad About You, and Friends all exist in the same universe. Kramer is subletting his apartment from Paul; Jamie appeared in an episode of Friends and mistook Phoebe for Ursula; Ursula works as a waitress in Mad About You
0w7GA TIL: Stephen Lyon Crohn was a man that was born with a genetic mutation that allowed him to be immune to AIDS. He was also the great-nephew of Burril Bernard Crohn for whom Crohn's Disease is named.