Lauren Sommer

President Biden has pledged urgent action on the "existential threat" of climate change. But his struggles to get his plan through Congress may undercut U.S. influence at a global climate summit.

How hot will the planet get? What nations negotiate at the international climate summit will help determine that. Here are 4 things to know about what's being decided.

Climate change is hitting many developing countries hard. In Uganda, one climate activist worries that the upcoming international climate talks won't protect her home.

Nations are gathering the first week of November to negotiate new climate change pledges. But a new report card from the United Nations says those pledges aren't enough to stop extreme climate change.

Nations are beginning pivotal talks to stop extreme climate change, but a new study shows even recent pledges to slow emissions aren't enough.

Heat waves are getting longer and more intense with climate change, which increases the risk of preterm birth. Pregnant women often don't hear about the dangers.

The announcement provides needed momentum for global climate change negotiations in November, but coal power is expected to keep growing within China itself.

The world's largest trees are adapted to wildfires. But with fires getting more extreme, scientists warn that giant sequoias are running out of time.

Burning fossil fuels must decline almost immediately, a new study finds, for the planet to avoid more extreme floods, droughts and heat waves.

With the global pandemic still in the spotlight, more than 200 leading health journals say climate change is an even more urgent threat.

Another destructive fire season has Western states searching for ways to prevent it. The Southeast just might have the answers: setting controlled fires before the wildfires come.

The latest report from climate scientists provides a stark warning about how fast the planet is changing. Here are the top takeaways.

Controlled burns help reduce wildfire risk by clearing out overgrown vegetation. The U.S. Forest Service is suspending them, concerning fire scientists.

Federal agencies are doubling down on stopping extreme wildfires. They're also limiting the use of fire to help with fire prevention, which is concerning some fire scientists.

Extreme heat and on-going drought have made Western wildfires a national challenge this summer, with smoke moving from coast-to-coast. The peak of fire season isn't even here yet.

In Silicon Valley, Google has acquired billions of dollars of property that's at risk for flooding as sea levels continue to rise. That's raising questions about whether it's safe to build at all.

Facebook's campus on the shoreline of San Francisco Bay is at risk from rising sea levels. So is a nearby low-income community. That's raising questions about who should be paying for climate change.

Coastal cities need billions of dollars to build defenses against sea level rise. Tensions are rising over where that funding will come from: taxpayers or private companies with waterfront property?

A record dry year is creating extreme drought in the West. But even if it rains, climate change will continue to shrink the water supply for millions of people.

Severe drought is spreading after a record dry year in the Western United States. Climate change is only making water shortages worse.