Study touts planting 1 trillion trees as most effective climate change solution

The cheapest way to halt the effects of climate change could be planting 1 trillion trees, according to a new study.

The study in the journal Science, first reported by The Associated Press, found that planting trees could be the most effective way to remove carbon from the atmosphere, but cautioned that it would have little effect without a reduction of emissions around the globe.

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“This is by far — by thousands of times — the cheapest climate change solution” study co-author Thomas Crowther, an ecologist at the Swiss Federal Institute of Technology, said.

“It’s certainly a monumental challenge, which is exactly the scale of the problem of climate change,” he added.

Though, Crowther cautioned, “None of this works without emissions cuts."

Scientists with the United Nations have called for a major reduction in carbon emissions over the next decade to stave off the worst effects of climate change, including rising sea levels and dangerous weather phenomena.

Lawmakers around the world have debated on how to address the issue, and in 2017 the U.S. withdrew from a major accord meant to battle climate change due to President TrumpDonald John TrumpDavid Axelrod after Ginsburg cancer treatment: Supreme Court vacancy could 'tear this country apart' EU says it will 'respond in kind' if US slaps tariffs on France Ginsburg again leaves Supreme Court with an uncertain future MORE's opposition to the pact.

Democratic candidates for president, including former Vice President Joe BidenJoe BidenBiden evokes 1968, asks voters to imagine if Obama had been assassinated Biden blasts Trump's 'embarrassing' actions heading into G-7 summit Steyer calls on DNC to expand polling criteria for debates MORE, have called for the U.S. to rejoin the agreement. Progressives are pushing an ambitious plan to cut U.S. carbon emissions, the Green New Deal, introduced earlier this year by Sen. Ed MarkeyEdward (Ed) John MarkeyMoulton drops out of presidential race after struggling to gain traction Joseph Kennedy mulling primary challenge to Markey in Massachusetts Overnight Energy: Trump sparks new fight over endangered species protections | States sue over repeal of Obama power plant rules | Interior changes rules for ethics watchdogs MORE (D-Mass.) and Rep. Alexandria Ocasio-CortezAlexandria Ocasio-CortezTlaib says Trump 'scared' of 'Squad' The Memo: Dangers loom for Trump on immigration Students retreating from politics as campuses become progressive playgrounds MORE (D-N.Y.).

If enacted, the Green New Deal calls for the transition of America's energy grid away from fossil fuels to renewable energy.