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Researchers Shocked to Learn Earth Could Have Faced Two More ‘Wipe Outs’ After Dinosaurs’ Extinction
As astronomer Carl Sagan once said, we are "made of star stuff," as this research suggests, we may also be at the mercy of it ...
Will the Trump administration ease up on Phoenix's air pollution problem? What to know
State and local officials have struggled for years to get a handle on ozone, a type of pollutant regulated by the federal ...