International climate talks turned to a power game on Friday as dozens of world leaders including the Saudi crown prince and India's prime minister were to speak, but two of the world's most powerful men — President Joe Biden of the U.S. and China's President Xi Jinping — were glaringly absent.

The U.N. weather agency says 2023 is all but certain to be the hottest year on record and warns of worrying trends that suggest more floods, wildfires, glacier melt and heat waves in the future.

Earth has sweltered through its hottest Northern Hemisphere summer ever measured, with a record warm August capping a season of brutal and deadly temperatures, according to the World Meteorological Organization.

U.N. Secretary-General António Guterres on Monday stressed the importance of legal challenges against “climate-wrecking corporations" like fossil-fuel producers, ratcheting up his call for the fight against climate change — this time before the U.N.'s top human rights body.

The world is in a “sorry state" because of myriad “interlinked” challenges including climate change and Russia's war in Ukraine that are “piling up like cars in a chain reaction crash,” the U.N. chief said at the World Economic Forum's meeting on Wednesday, January 18, 2023.

Dozens of countries and international institutions on Monday, January 9, 2023, pledged more than $9 billion to help Pakistan recover and rebuild from devastating summer floods that the United Nations chief called “a climate disaster of monumental scale.”

Much of the Alps just don't look right for this time of year. Sparse snowfall and unseasonably warm winter weather in Europe’s central mountains are allowing grass to blanket hillsides across the region, causing headaches for ski slope operators and aficionados of Alpine white.

Bountiful for centuries, the crystal-clear waters issuing from the Alps could become increasingly contested as climate change and glacier melt affect the lives of tens of millions in the coming years.

Switzerland’s 1,400 glaciers have lost more than half their total volume since the early 1930s, a new study has found, and researchers say the ice retreat is accelerating at a time of growing concerns about climate change.

The U.N. health agency says nearly everybody in the world breathes air that doesn’t meet its standards for air quality, calling for more action to reduce fossil-fuel use, which generates pollutants that cause respiratory and blood-flow problems and lead to millions of preventable deaths each year.