More than 190 countries have signed the Paris agreement designed to limit global warming to 1.5 degrees Celsius, but even with pledges of big reductions in emissions many scientists believe removal technologies will be needed to meet the goal.
More than 190 countries have signed the Paris agreement designed to limit global warming to 1.5 degrees Celsius, but even with pledges of big reductions in emissions many scientists believe removal technologies will be needed to meet the goal.
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