Mona Lisa's eyebrows

A new exhibition, "Mona Lisa Secrets Revealed," uses technology to unlock questions that have plagued art historians for generations, including, "What happened to the lady's eyebrows?"

The new digital images prove, among other things, that Da Vinci did, indeed, give thelady eyebrows. French engineer Pascal Cotte, founder of Lumiere Technology, "scanned the painting with a 240-megapixel Multi-spectral Imaging Camera he invented, which uses 13 wavelengths from ultraviolet light to infrared. The resulting images peel away centuries of varnish and other alterations, shedding light on how the artist brought the painted figure to life and how she appeared to da Vinci and his contemporaries."