Greenhouse gas levels reach record high amid COP26 worries

Atmospheric concentrations of the major greenhouse gases, carbon dixoide, methane and nitrous oxide, are at record levels

Greenhouse gas concentrations in the atmosphere reached record levels last year, the United Nations said Monday, in a stark warning as Britain's Boris Johnson admitted being "very worried" about the COP26 summit going awry.

"At the current rate of increase in greenhouse gas concentrations, we will see a temperature increase by the end of this century far in excess of the Paris Agreement targets of 1.5 to two degrees Celsius above pre-industrial levels," he warned.

Originally published as Greenhouse gas levels reach record high amid COP26 worries