Climate Change Has Saved the Planet. For Now.

Good news: Don't expect an ice age for 100,000 years. Bad news: Global warming is still a problem.

A Brief History of Global Warming

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Warm temperatures across North America last month had some bemoaning bare slopes and a brown Christmas. Shouldn't it be colder, many asked? In truth, much.

Climate scientists have been asking the same thing for a significantly longer period of time. The whole planet should be colder—and not just because humans have spun up the planetary thermostat over the past 150 years.