GENEVA — 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.
"More bad news for the planet," the World Meteorological Organization said in a statement along with its latest annual Greenhouse Gas Bulletin. It's one of several reports released in recent days looking at several aspects of humanity's struggle with climate change in the run up to the U.N.'s latest climate conference, in Sharm el-Sheikh in Egypt.
