UN weather agency: Greenhouse gases reach new record in 2021 | AP News

UN weather agency: Greenhouse gases reach new record in 2021 | AP News: GENEVA (AP) — The three main greenhouse gases hit record high levels in the atmosphere last year, the U.N. weather agency said Wednesday, calling it an “ominous” sign as war in Ukraine , rising costs of food and fuel, and other worries have elbowed in on longtime concerns about global warming in recent months.