A decade ago, regulators said the power plants couldn't withstand bitterly cold weather. Now, 4 million people are in the dark.

U.S. military facilities are already encountering some of the effects of climate change.

The president threatened to halt the FEMA's assistance to victims unless the state changes its forest management practices.

It's a decision they may regret as Hurricane Florence takes aim at the Carolinas.

Eight months after Hurricane Maria ravaged Puerto Rico's power grid, 23,000 customers remain without power.

Eight months after Hurricane Maria ravaged Puerto Rico's power grid, 23,000 customers remain without power.

Cyberattacks are happening hundreds of thousands of times a day.

Cyberattacks are happening hundreds of thousands of times a day.