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TIL that Habsburg dynasty has a unique lip structure and this is a result of incestuous selection of marriage partners.

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b96YZ The rise of Genghis Khan and the Mongolian empire was responsible for the annihilation of an estimated 40 million people, but there were clearly more than a few conquests off the battlefield as well. A 2003 study suggests that 1 in 200 men are direct descendants of Genghis Khan. Studies of Y-chromosome data found that almost 8 percent of men living in the former Mongolian empire carry nearly identical Y chromosomes. Researchers believe this is attributed to a unique set of social selection circumstances put into play by the spread of the Mongolian empire. In this week’s "Today I Learned," research scientist Albert Lin elaborates on Genghis Khan as a romantic.
D1VPr TIL that you need to climb 2 hours on a 800 meters (0.5 miles) steel ladder to get to the clifftop village of Atule'er in Southern China. Recently 72 families were relocated to a town under the cliff, but 30 households intend to stay in their clifftop homes, partly due to a newfound tourist economy.
GAWmg TIL the younger sister of the famous writer Erich Maria Remarque (All Quiet on the Western Front) was beheaded on 16.12.1943 in Berlin for antiwar and antinazi words.
e0Zvk TIL comedy writers Leonard Stern and Roger Price had an idea for a word game but didn't know what to call it. One day they overheard an actor saying he wanted to "Ad-Lib" an interview in which his agent called him "mad" for doing it. Stern and Price used that chat to call their creation Mad Libs.
N7RaP TIL that many birds do not breed very well in small flocks and that Zoos use mirrors to help increase reproduction.