Whether we're texting or using tools, our hands -- perhaps more than any other body part -- are what equip us for modern life.
원문출처 : https://www.cnn.com/2021/01/28/world/opposable-thumb-human-evolution-study-scn/index.html
원문출처 : https://www.cnn.com/2021/01/28/world/opposable-thumb-human-evolution-study-scn/index.html