Popocatépetl looms over central Mexico, but local perception of risk from the volcano varies depending on factors such as age, proximity, and life experience. Credit: Russ Bowling/Flickr, CC BY 2.0 If ...
Coccolithophores build armored shells out of calcium carbonate, influencing ocean chemistry in the process. Credit: Courtesy Dr. Alison Taylor; Mejia, 2011, https ...
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