 | Viewing all three sets of data together, we can begin to see a patternemerging around A.D. 535. At first, there is a large amount of volcanicactivity, then a dramatic drop in global temperatures, and finally, a windowof possible time in which the volcano Krakatoa could have erupted. Did a violent eruption of Krakatoa in the mid-sixth century cause worldwide environmental and social change? Scientists are exploring this fascinating theory using the methods explained in this section.
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