Add Yahoo as a preferred source to see more of our stories on Google. Fingerprints are those little ridges on the tips of your fingers. They’re essentially folds of the outer layer of skin, the ...

Using fingerprints as a form of identification has been used since the reign of Hammurabi in ancient Babylon. Nearly 4,000 years later, fingerprints are still a vital form of identity authentication, ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com. How do we get the fingerprints we have? – Oscar ...