Nathan Rott

Ukrainian troops are digging in for a long winter of continued fighting in the country's east and south. The change in seasons is expected to bring a shift in the fighting against Russian troops.

Ukraine is suffering power outages and damaged heating systems as Russia attacks its energy systems. Many are preparing for winter by cutting down trees, raising concerns about the country's forests.

Ukraine says Russia is using the cold as a weapon against Ukrainians, by targeting the country's ability to heat and power homes. Repair crews are struggling to restore power to damaged areas.

Delegates reached a last-minute deal to pay vulnerable countries for damages caused by climate change. But the final agreement does not put humanity on track to avoid catastrophic warming.

Despite new agreements to limit methane emissions and beef up weather forecasts, vulnerable countries aren't getting any more help and the Earth is headed for catastrophic warming.

Russia's invasion of Ukraine is giving Ukrainian scientists and climate negotiators a big stage at the U.N. climate conference in Egypt.

The coming winter may provide Ukraine with more opportunities to retake land from Russia, Western military analysts say. It will also bring a change in battlefield tactics.

The UN climate conference in Egypt is in its second week. Here's an update on how negotiations are progressing.

The UN climate conference in Egypt is in its second week. Here's an update on how negotiations are progressing.

A Ukrainian hotline that helps Russian soldiers sent to the frontline surrender has been used thousands of times. Its traffic increased after Russia announced a partial mobilization of civilians.

Ukrainian troops are digging in for a long winter of continued fighting in the country's east and south. The change in seasons is expected to bring a shift in the fighting against Russian troops.

Sixty percent of Ukrainians who fled their homes for other parts of the country have lost their jobs, as Russia's invasion has upended industries and destroyed businesses.

Millions of Ukrainians forced from their homes and jobs are starting new lives in safer parts of the country. Some are finding it hard to make ends meet.

Russian attacks have damaged at least 30% of Ukraine's energy infrastructure, raising concerns about the coming winter.

Explosions rang out across Kyiv early Monday, a week after nationwide strikes rocked the city for the first time since June.

There were more air raid sirens Wednesday in parts of Ukraine. Russia on Tuesday launched fresh missile attacks — following up on Monday's strikes.Ukraine pleaded for more modern air defense systems.

Sweltering heat isn't the only problem this weekend in California. A tropical storm is bringing flooding to the southern half of the state. And wildfires are making the air quality bad.

The strain on the power grid is leading to outages in some parts of the state and is putting vulnerable residents at risk. Other western states are also baking under the historic heat.

Citing climate change and the need to cut carbon emissions, California is extending the life of the Diablo Canyon nuclear power plant.

The measure is the first in the nation, but other states are expected to follow. The aim is to curb emissions that contribute to global warming and health issues.