Just what is the point to all those ridges and furrows set into our fingers, toes, palms and soles? We do some detective work on the answer. Plus, we ask how sharks make blood when they have bones made from cartilage. Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

Just what is the point to all those ridges and furrows set into our fingers, toes, palms and soles? We do some detective work on the answer. Plus, we ask how sharks make blood when they have bones made from cartilage. Like this podcast? Please help us by supporting the Naked Scientists

Just what is the point to all those ridges and furrows set into our fingers, toes, palms and soles? We do some detective work on the answer. Plus, we ask how sharks make blood when they have bones made from cartilage. Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate" rel="noopener noreferrer">supporting the Naked Scientists</a>

Why do we have fingerprints?

Each week we set out to solve one of the world's weirdest, wackiest, funniest and funkiest scientific puzzles. And along with the answer there's a brand new question to think about for next time...

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Why do we have fingerprints?

Why do we have fingerprints?

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