People Share Interesting Things In ‘Today I Learned’ Online Group

The subreddit Today I Learned is an online community where people share all the interesting and insightful new things they learned just now.

Also, you can check our previous TIL posts here.


today I learnedholyfruits

TIL Judith Love Cohen, who helped create the Abort-Guidance System which rescued the Apollo 13 astronauts, went to work on the day she was in labor. She took a printout of a problem she was working on to the hospital. She called her boss and said she finished the problem and gave birth to Jack Black



TIL about the Great Green Wall, an effort to plant trees to stop desertification in the Sahara that began in 2007. Ethiopia has planted over 5.5 billion seedling since


today I learnedLazyFlamingosss

TIL Hours after being adopted from an animal shelter, 21-pound cat Pudding saved her owners life. While suffering a diabetic seizure, Amy Jung’s newly acquired cat pounced his weight on her chest and began swatting her face and biting her nose until she gained consciousness.



TIL that ravens and wolves have formed a mutually beneficial relationship out in the wild. Ravens have been observed calling wolves to the site of dead animals so that the wolves will then open up the carcass and leave the scraps for the ravens once they’re finished.


today I learnedEtOHMartini

TIL that in 1995, a man received a “check” for $95,000 as junk mail. Jokingly, he deposited it into his account. The “check” met all of the legal criteria for a check and was cashed



TIL of Elouise Cobell (“Yellow Bird Woman”) who founded the first Native American owned bank. As treasurer of the Blackfeet Nation she tried to resolve accounting discrepancies regarding leases on Indian Land which led to a $3.4 Billion dollar class action settlement against the US government.


today I learnedPolar_Roid

TIL NASA’s longest serving female employee since January 1958, Sue Finley, has been an engineer and programmer for space missions since Explorer 1, for missions to the Moon, Sun, all the planets and many other solar system bodies, and recipient of NASA’s Exceptional Public Service Medal.



TIL the King’s doctor Johann Struensee seized power for over a year in 18th century Denmark. He managed to abolish slavery, abolish censorship of the press, and have an affair with the Queen before being ousted and executed in 1772


today I learnedThyriel81

TIL that the worlds rarest tree, Kaikōmako native to New Zealand, has been rescued from extinction after 40 years of trying to get the very last female tree in the world to fruit again



TIL Richard Simmons would wake up at 4AM to call up to 40 people who are isolated, alone, or needed empathy. Some credited Richard Simmons for saving their lives