In a guarded compound at the foot of the Rockies, government scientists are working on a new kind of global alarm system: One that can detect if another country, or maybe just an adventurous billionaire, tries to dim the sun.

The leap in temperatures over the past 13 months has exceeded the global heating forecasts – is this just a blip or a systemic shift?

Marine cloud brightening (MCB), the spraying of sea salt aerosols or other fine particles into clouds to artificially brighten them and increase the sun’s reflectivity, is a proposed strategy to ward off the full effects of climate change

Earth’s warming could trigger sweeping changes in the natural world that would be hard, if not impossible, to reverse.

Extreme weather is by definition rare on our planet. Ferocious storms, searing heatwaves and biting cold snaps illustrate what the climate is capable of at its worst.

NOAA and United Airlines have announced an agreement to equip a Boeing 737 with a sophisticated instrument package that will measure greenhouse gases and other pollutants during domestic flights.

When the maritime sector slashed sulfur emissions, it became an accidental experiment in geoengineering.

A first-of-its-kind climate science research program was just shut down in Alameda, California by local leaders, against the advice of city staff and experts who confirmed the safety and value of the research. 

Aboard the deck of a World War II-era aircraft carrier, University of Washington scientists flicked the switch on a glorified snow-making machine, blasting a plume of saline spray off the coast of Alameda, Calif.

Scientists are testing a controversial idea in the Bay Area for cooling our warming planet. Velena Jones has the story.

In Alameda, scientists are embarking on a novel attempt to cool the Earth — by spraying salt into clouds.

Earth’s stratosphere has never seen the amounts of emissions and waste from rockets and satellites that a booming space economy will leave behind.

Legendary climate scientist James Hansen, in a new study published Thursday, predicts that the Earth's temperature rise will accelerate in the upcoming decades and will reach 2 degrees Celsius above preindustrial temperatures by 2050.

For the past few decades, the entire planet has been conducting an experiment that could save us from climate change disaster. It’s the kind of experiment that would never be allowed to happen under normal circumstances, due to how dangerous it is and how catastrophic the results could be.

Carbon credits have come under fire recently, as regulators, analysts and media take a closer look to see if and how well these credits represent actual benefits for climate.