Has global warming stopped? That's what some people claim, based on global temperatures recorded since 1998. But, scientists say, not setting a new record high temperature each year doesn't mean the globe is cooling.
The amount of sea ice that survives the Arctic summer has declined by 13 percent per decade since the start of the 43-year satellite record.
From record-high summer heat to the greening of the Arctic, this collection of images highlights several key "vital signs" of the Arctic.
China has overtaken the U.S. as the largest annual emitter, but all countries have to reduce their emissions if we want to stop further global warming. Every fraction of a degree of warming we avoid lowers the risks to people and other life on Earth.
One of the most ambitious reef-restoration efforts ever attempted worldwide faces a tough challenge: restoring reefs to their past glory while helping them confront future change.
Snow-cover duration continued a longer-term pattern in 2021–22, of significantly faster springtime snowmelt.
The 2022 melt season on the Greenland Ice Sheet started slowly, but ended late, with multiple melt spikes in September.
Arctic temperatures over 2021-22 were the sixth-warmest on record, based on records dating back to 1900.