Frigid Arctic air, winter storms grip much of US

Much of the United States was in the icy grip of an unprecedented winter storm Monday as frigid Arctic air sent temperatures plunging, forcing hundreds of flight cancellations, making driving hazardous and leaving millions ...

Dozens of nations miss deadline to boost climate ambition

More than half the world's nations failed to submit upgraded commitments by year's end to reduce their greenhouse gas emissions, straggling behind the schedule of accelerated climate ambitions set out in the Paris Agreement.

Chinese craft returns to Earth with Moon rocks

An unmanned Chinese spacecraft carrying rocks and soil from the Moon returned safely to Earth early Thursday, completing another chapter in China's effort to become a space superpower.

page 17 from 26