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 ...

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 ...