Parts of Vincent van Gogh's "Flowers in a blue vase" painting have mysteriously changed color over time, and now scientists have figured out why: A chemical reaction between the paint and a protective ...
Photo of the painting “Flowers in a blue vase” by Vincent van Gogh. The discoloration is located on the right side of the bouquet. Image courtesy of Kröller-Müller Museum Since Vincent van Gogh ...
Even though cadmium is considered a probable human carcinogen by the U.S. Environmental Protection Agency, it is still used to give some plastics and ceramics red, orange, or yellow hues. That’s ...
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