Delaware Online: As heat records tumble and weather disasters increase, aggressive skepticism has displaced outright denial among some of those unwilling to accept the idea that humans are changing the air on a global scale. Perhaps pollution is warming the planet, skeptics concede, but measurement errors, misinterpretation, solar activity or very long-term climate cycles could account for what most scientists now see as human-triggered climate change. For good measure, some brand those who believe human activity...
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