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TIL that a number far larger than a googol and googolplex exists. Graham’s number is so large that the observable universe is far too small to contain a digital representation of the number, assuming one Planck volume per digit.

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W7NVo TIL that Elysia marginata sea slugs steal chloroplasts from the algae they eat in order to photosynthesize, and can regrow their entire leaf-shaped bodies after decapitation.
epZx4 TIL that Marlon Brando often refused to memorize his lines for movies like The Godfather. Instead, the crew used cue cards placed around the set, even on other actors. Brando claimed this approach made his performances feel more real and spontaneous, capturing the uncertainty of real conversations.
m1pnE TIL: A newer study about marital issues contradicts a previous laboratory study which concluded that money is not a frequent source of marital conflict. Using real world data from parents in schools, churches, etc, money was the main source of marital conflict and had a big effect on relationships.
Mw90 TIL in 2007, Stephanie Lenz posted a YouTube video of her children dancing to “Let’s Go Crazy.” Universal sent YouTube a takedown notice, claiming it violated copyright. The court ruled that copyright holders must consider fair use before issuing takedown notices for content posted on the internet.
wL4G7 TIL A 2014 U.S. study showed one hour of sleep during the daylight saving time raised the risk of having a heart attack the next week by 24%. By contrast, when “falling back,” the extra hour of sleep made heart attacks risk fall 21% the next week.