A leading Canadian climate scientist says a new report showing planet-warming carbon dioxide levels have soared to record amounts in 2024 is the latest sign Canada must resist pressure to backslide on climate action.

The World Meteorological Organization's annual greenhouse gas bulletin says the CO2 growth rate, which has tripled since the 1960s, reflects a combination of continued fossil fuel emissions and reductions in how much is absorbed in forests, oceans and other natural "carbon sinks."

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