Scientists keep studying creative ways to reduce global warming, and on Wednesday they highlighted another possibility: Making clouds over the oceans thicker and brighter. This would involve a fleet ...

States are spending millions of dollars on cloud seeding technology, backed by new data on its effectiveness — and driven by ...

Winter is setting in across the Northern Hemisphere, and with it, cold and cloudy winter days. Clouds play a vital role in the environment, providing rain but also reflecting sunlight before it ...

Earth is reflecting less sunlight, and absorbing more heat, than it did several decades ago. Global warming is advancing faster than climate models predicted, with observed temperatures exceeding ...

What’s the line between boundary-pushing innovation and dangerous improvisation? Who determines whether an untested environmental initiative is visionary or vandalism? And how can a business charge ...

A peculiarly large hole appeared in the clouds near Russia’s Norilsk Nickel factory, one of the world’s largest producers of nickel and a heavy air polluter. Scientist Velle Toll was intrigued by the ...