Tackling climate change might seem overwhelming, but everyone can make a difference. Tell us what you’re doing for a more sustainable planet: https://cnn.it/2qA21KR | CNN International

The planet just sweltered through its third-warmest year on record, according to a new report from Copernicus, the European Union's climate monitoring service, surpassing a key warming target for the third consecutive year. All of that excess warmth is finding its way into the oceans, where scientists marked another grim milestone in 2025. CNN's Bill Weir reports. | CNN International