Golden Ratio observed in human skulls

The Golden Ratio, described by Leonardo da Vinci and Luca Pacioli as the "Divine Proportion," is an infinite number often found in nature, art and mathematics. It's a pattern in pinecones, seashells, galaxies and hurricanes.

Mathematics of scale: Big, small and everything in between

Breathe. As your lungs expand, air fills 500 million tiny alveoli, each a fraction of a millimeter across. As you exhale, these millions of tiny breaths merge effortlessly through larger and larger airways into one ultimate ...

Experts comb through DNA from possible Da Vinci hair

A lock of what some historians think is Leonardo da Vinci's hair went on display Thursday at a museum in his Tuscan birthplace as they seek to prove it contains his DNA 500 years after the genius died.

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