TIL 5,200 tons of space dust falls on Earth every year space.com Submitted by StoryAndAHalf t3_y6k4rp on October 17, 2022 at 7:28 PM in todayilearned 83 comments 972
TIL As opposed to having XY chromosomes (found in mammals), birds, some fish, crustaceans, and insects have ZW system, where males typically have ZZ and female ZW chromosomes. en.wikipedia.org Submitted by StoryAndAHalf t3_yh1qi1 on October 30, 2022 at 1:59 AM in todayilearned 9 comments 159