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Is climate change speeding up? Here's what the science says.

Some scientists have warned the rate of global warming might soon accelerate. And now, after the hottest year in recorded history, some believe it is already happening.

By Chris Mooney and Shannon Osaka Read more »

Written in the wood

What one pine tree on an Arizona mountaintop can tell us about the hottest year on record — and what lies ahead.

By Sarah Kaplan, Bonnie Jo Mount, Emily Wright and Frank Hulley-Jones • Read more »

Crawford Lake shows humans started a new chapter in geologic time, scientists say

Scientists say Crawford Lake holds the best evidence for humanity's overwhelming impact on the Earth — and should be the 'golden spike' for a new geologic epoch.

By Sarah Kaplan • Read more »

The nation's capital, built on water, struggles to keep from drowning

Washington, D.C., is awash in water. It was built on fill and its natural waterways, long buried, are coming back to life.

By Dana Priest and John Muyskens • Read more »

You're doing it wrong: Recycling and other myths about tackling climate change

Most Americans think their actions can help fight climate change, but they're not always right on which are the most effective, according to a Post/UMD poll.

By Kate Selig and Emily Guskin • Read more »