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TIL that 'smooth brain' is a real medical malfunction where people have brains that lacks the typical bumps and folds. The medical term is 'lissencephaly'.

Read more ninds.nih.gov

via reddit.com

epZ8n TIL that close to half of the US population is projected to have obesity by the year 2030 (article is from 2019)
9y97 TIL that the leading manufacturers of incandescent light bulbs in the early 20th century, conspired to keep the lifetime of their bulbs far below their real technological capabilities. This way, they ensure the continuous demand for more bulbs and hence, long-term profit for themselves.
4XlpX TIL of the condition Hikikomori which is seen among the youth of Japan and is also seen in UK, US, etc. Hikikomoris are reclusive adolescents or adults who withdraw from society and seek extreme degrees of isolation and confinement. It is estimated that there are about a million hikikomoris in Japan
oBMP7 TIL The first female prisoner to be force fed was fighting for birth control
BRak TIL that Brazil participated in WW2, the only independent South American country to do so. The 25,000-troop Brazilian Expeditionary Force worked alongside the Allies, and managed to take 20,573 Axis prisoners, consisting of two generals, 892 officers and 19,679 other ranks.