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TIL : The World population was about 300 million at the time of Jesus. A thousand years later it was about 310 million.

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vjgL TIL Most scholars accept the story of Dhul-Qarnayn in the Quran is a reference to Alexander the Great
9YAKQ TIL about Rai Stones, large donut-shaped stones weighing up to 4 tons which were used as currency on the island of Yap. Because it is hard to move the stones, buying something simply involves agreeing the stone changes ownership and 'recording' it in oral history.
9YKBG TIL Research shows that starting school at 10am instead of 8:30am halves student illness and improves academic performance.
d8amQ TIL about a protein called pikachurin, a protein discovered in 2008 that is present in the retina and helps with the transmission of electrical impulses between the eyes and the brain
woEO1 TIL: The AICPA (which is responsible for All CPAs in America), has a program known as the "Federal Key Person" for CPAs who know a Congressperson or a person who knows a Congressperson. They receive information from the AICPA when important matters arise, to privately inform their assigned target.