PARIS: Planetary-scale engineering schemes designed to cool Earth's surface and lessen the impact of global heating are potentially dangerous and should be blocked by governments, more than 60 policy experts and scientists said on Monday .
"We therefore call for immediate political action from governments, the United Nations and other actors to prevent the normalisation of solar geoengineering as a climate policy option." The failure to reduce the greenhouse gas emissions that drive global heating has led some policy makers to embrace solar geoengineering - widely dismissed not long ago as more science fiction than science - in order to buy time for a more durable solution.
Other regions, however, could benefit: A study last year concluded that SRM could sharply curtail the risk of drought in southern Africa. In addition, the technology would do nothing to stop the continuing buildup of atmospheric CO2 , which is literally changing the chemistry of the ocean.
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