Grace Hood

More than a decade ago, the issue seemed distant to Americans' experiences. But now polls show a dramatic rise in concern, driven partly by extreme weather.

Many cities are converting to LED streetlights. The move can help restore darker skies and make stars visible again, and they also save energy and money. But some LEDs emit light that disrupts sleep.

Last August, 3 million gallons of orange wastewater flooded into Colorado's Animas River, ending up in Lake Powell. But Congress has failed to come up with a way to stop this from happening again.

Climate change is affecting what visitors see in Mesa Verde National Park. Over the past decade, scorching wildfires have destroyed archaeological artifacts — and have also revealed new ones.

Methane is a powerful greenhouse gas, and on Thursday the Obama administration laid out new regulations to stop methane leaks from the oil and gas industry. A report from Colorado explains how that state has brought methane emissions under control.

In a Disney Store in Southern California, displays include playful child-size mannequins that encourage shoppers to interact with the merchandise.