Why do we have fingerprints? - a podcast by Dr Chris Smith

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

Further episodes of Question of the Week, from the Naked Scientists

Further podcasts by Dr Chris Smith

Website of Dr Chris Smith