Carbon dioxide levels hit new highs last year and are expected to keep growing in 2020, data published on Monday by the World Meteorological Organization shows, crushing hopes that lockdowns across the world would have pushed emissions, the main driver to climate change, to a record low. Al Jazeera quotes the WMO’s head of atmospheric environment research, Oksana Tarasova, as saying that the magnitude of the increase in carbon dioxide levels during the past four years was comparable to changes seen during the shift from an ice age to more temperate periods but, back then, the transition happened over a much longer timeframe. “We humans did it without anything, just with our emissions, and we did it within four years.”