In the 1840s, a new painting by Jean Francois Millet was unveiled in Paris. But, horror of horrors, no one seemed to like it!
Scientists believe they now know why Vincent van Gogh's sunflower paintings have dulled over the years.
The shift is gradual once the artist finishes, taking decades, or even centuries, but eventually colors fade, darken, or become more transparent over time.
What's the deal with Mona Lisa's smile? Find out on this Moment of Science.