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TIL maize, beans and squash, the three main agricultural crops of Native Americans were named Three Sisters by them for their symbiotic relationship when grown together. Maize gives structure for the beans to climb, beans provides nitrogen to the soil and squash spread-grows preventing weed growth.

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4XjK6 TIL Indigenous Australians were the first people to bake bread. Around 15,000 years earlier than Egyptians
Z89rG TIL that Kryptonite was introduced in the Superman story five years after the comic was first published. It was created as a way to give Clayton Collyer, the actor that played Superman/Clark Kent in the radio show, some time off so he could take a vacation.
M766A TIL that in 1929, Jimmy Doolittle made the first flight using only instruments, with the cockpit windows blacked out. Proving pilots could fly “blind.” This paved the way for modern aviation. He later led the famous 1942 Doolittle Raid, the first U.S. airstrike on Japan in WWII.
BrVnd TIL Some believe that if children wear glasses when they are young, they won’t need them later. Others think wearing glasses as a child makes one dependent on them later. Neither is true. Children need glasses because they are genetically nearsighted, farsighted, or astigmatic
XEJE TIL the reason why you occasionally can receive radio stations from cities far outside their normal broadcast range. A phenomenon called Tropospheric Ducting acts like a lens, bending the radio waves and greatly extending the normal reception range.