› added 3 months ago

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TIL scientists are using machine learning on photos of your retina (the back of your eye) to help screen for ADHD!

Read more nature.com

via reddit.com

Bo7D TIL Carrots (which used to be of purple or white stock) were originally bred to be orange to show support for the Dutch Orange-Nassau dynasty. The seafaring dutch then spread their breed of carrot the world over.
gM408 TIL that purple is a "non-spectral color", which means that it exists only in our minds: there is no wavelength of light that corresponds to it. Our brain perceives purple when it sees a mixture of strong red and strong blue light, without any green.
88Xb TIL that if you have a bone marrow transplant, your blood can have the donor’s DNA and your salival and hair DNA will be your own. It has caused people to be wrongly arrested based on DNA evidence.
goK7 TIL in 1971, a woman petitioned a Judge for permission to sterilize her “somewhat retarded” daughter. Without a hearing, evidence, or representation for the daughter, the judge granted permission. The daughter later tried to sue the judge, but the Supreme Court voted 5-3 to grant the judge immunity.
KYrNB TIL a 1553 world map published by Petrus Apianus called North America "Baccalearum", meaning "realm of the Cod fish", in reference to the abundance of cod fish on the East Coast.