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“Even within the margin of error and the occasional yearly fluctuation, our planet is getting steadily warmer. Ignoring this fact is like stepping in front of a train and hoping that, if we close our eyes, the train won’t hit us,” says Professor Marcelo Gleiser in his latest post for NPR’s 13.7 Cosmos & Culture blog.

Gleiser is the Appleton Professor of Natural Philosophy and a professor of physics and astronomy.