To a casual listener to global-warming skeptics, it would seem that climate scientists are foolishly professing to know exactly how climate change is playing out. But that's hardly the case: climate scientists have always maintained that their understanding of global warming — its future effects, how rapidly warming will occur, or to what degree — is far from 100%.
What they do know is that climate change is real, potentially dangerous and largely due to human activity. When it comes to the details, though, answers come in pieces — scientific journals publish studies almost daily, and each one helps narrow down the very real uncertainties that remain about how the planet responds to increasing levels of greenhouse gases.
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