To that end, the researchers modeled different scenarios for emissions as humanity bounces back from the pandemic. With a recovery still reliant on fossil fuels, emissions would be 10 percent higher in 2030. They calculate that a moderate green stimulus package, which would allocate an additional 0.8 percent of global GDP toward low-carbon energy, would result in a 35 percent decrease in emissions by 2030, reaching global net-zero level of CO2 by the year 2060. But an aggressive stimulus—which would invest 1.2 percent of global GDP in low-carbon tech to juice the world economy and truly tackle climate change—would cut emissions by half by 2030, and reach global net zero by 2050, a decade earlier than the moderate stimulus would.
But that’s going to be a tall order, says Louisiana State University environmental scientist Brian Snyder, who wasn’t involved in the