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TIL Sudan has nearly twice as many pyramids as Egypt.

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KO05E TIL human babies are helpless because we walk upright. Walking upright requires a narrow pelvis, in which our large head/brain would get stuck during birth, so babies are born with a smaller head/brain that develops more after birth, compared to other mammals.
wooyM TIL Snowman Trek is one of the most difficult hiking trails in the world. Located in Bhutan, created by the yak herders, it is the longest hiking trail of the country. It takes about 25 days to complete, most of the trekkers do not complete the hike due to hard weather, duration, and high altitude.
6E6Nw TIL of Henry “Box” Brown. A slave who escaped the slave state by mailing himself in a 3 foot X 2 foot X 8 inches deep box from Virginia to Philadelphia. The journey took 27 hours and he had a little water and some biscuits as food. Brown became a prolific Anti Slavery speaker
a8ERA TIL the smell of freshly cut grass is actually a distress signal. When grass blades are cut, they release green leaf volatiles (GLVs).It alerts the plant to damage so it can mobilize repair. GLVs are also airborne messages warning neighboring plants of danger.
XEwoQ TIL that the colors of the barber pole are red, white, and blue to represent the medieval role of barbers. The red represents the blood from bloodletting, the blue represents the vein that was cut, and the white represents the bandage. It spins to represents the blood flowing down.