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Our planet is getting steadily warmer — and ignoring this fact is like stepping in front of a train and hoping that if we close our eyes, it won't hit us, says commentator Marcelo Gleiser.
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Ebola has made us all obsessed with body temperature. 98.6 degrees Fahrenheit is normal, right? But what about 98.2? Or 99? And how high and low can you go on the thermometer and survive?