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TIL that ancient Roman concrete’s resilience comes from lime clasts, which helped it self-repair cracks and maintain strength over centuries

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kOlb4 TIL that more people in the US speak Spanish than in Spain
yQXQv TIL the Chihuahua (dog) was bred for food and as a heat pad by the ancient Aztecs and Mayas
R5BK1 TIL the Midway Atoll used to have a naval base with 5,000 residents but is now a nearly-abandoned wildlife refuge.
oda8 TIL Firestone funded and aided a violent, vicious, and rapacious warlord to overthrow the Liberian government to keep their rubber plantation secure and the export taxes low.
yVnvJ TIL that in 1981, president Ronald Reagan appointed Donald Regan as his treasury secretary.