Levels of climate-warming greenhouse gases in atmosphere reach record highs

Concentrations of carbon dioxide and other heat-trapping gases in the atmosphere rose at a faster rate in 2020 than over the previous decade. Picture: PA

Levels of planet-warming greenhouse gases in the atmosphere reached record highs again last year, UN scientists have warned ahead of key climate talks.

Concentrations of carbon dioxide and other heat-trapping gases in the atmosphere rose at a faster rate in 2020 than over the previous decade, and the trend has continued in 2021, the UN’s World Meteorological Organisation (WMO) said.