Source: https://en.wikipedia.org/wiki/File:Leonardo_da_Vinci_-_Saint_John_the_Baptist_C2RMF_retouched.jpg

Where Do Finger Names Come From?

Our names for our fingers show a surprising depth of cultural variation—and similarity.
Two illustrations of the heart

Who Really Discovered How the Heart Works?

For centuries, the voice of the Greek doctor Galen, who held that blood is produced in the liver and filtered through tiny pores in the heart, went unchallenged.