Scientists are studying how paintings that were completed after major volcanic eruptions can give us insight into global climate change. The scientists studied works painted around the times of major volcanic eruptions, such as the cataclysmic explosion of Mount Krakatoa in 1883. The brilliant sunsets painted after that explosion tipped off scientists that the atmosphere was different during those times. The amount of red and greens in the painting can tell about how much pollution was in the atmosphere. A total of 554 paintings from 181 artists that occurred after volcanic explosions are now being reviewed.