In 2020, greenhouse gas concentrations hit a record and the world is “far off track” in limiting increasing temperatures, according to the United Nations, which warned on Monday in a sheer reminder of the task facing UN climate discussion in Scotland. Despite a short drop in emissions during COVID-19 lockdowns, carbon dioxide levels rose to 413.2 parts per million in 2020, according to a report by the United Nations World Meteorological Organization (WMO).

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