› added 2 weeks ago

8

TIL about primordial black holes (PBHs), hypothesized to have formed in the early universe; some small extra-dense spots collapsed into black holes as everything expanded and cooled down. It's also been hypothesized that dark matter, which constitutes 85% of the universe's mass, is made up of PBHs.

Read more wikipedia.org

via reddit.com

j6jAj TIL Serj, Daron, and Shavo of System of a Down all went to the same elementary school. Although they were not acquainted at the time due to a gap in their ages.
x7N5 TIL that after a woman’s lung collapsed on a flight, two doctors performed surgery with the aircraft’s medical kit, along with a coat hanger, Sellotape, a knife and fork, a bottle of water, and five star brandy for disinfectant. The woman felt better after ten minutes.
a80WN TIL that manatees use their farts to swim. They hold in their gas to help them get closer to the surface of the ocean, and then expel it to help them travel back down to the bottom.
W79L TIL Hundreds of millions of birds are killed each year colliding with manmade structures
MeRLB TIL that after the American Civil war some 10,000 to 20,000 Confederates fled to Brazil, founding the city of Americana near São Paulo. Today their descendents called "Confederados" have an annual festival marked by Confederate flags, uniforms, hoop skirts, and foods like fried chicken.