| http://www.w3.org/ns/prov#value | - illion years ago, when dinosaurs roamed Earth, was certainly substantially warmer than today, and CO2 levels were substantially higher, he notes. ???But that doesn???t contradict the fact that we are increasing greenhouse gas concentrations today at a faster rate than Earth has ever seen to our knowledge and that the temperature and other changes that are taking place are happening at a far greate
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