Scientists had thought that they might have discovered a way to stop global warming or at least a way to slow it down by ‘cooling’ off the Earth. Their plan was to inject sulfate particles into the atmosphere. Unfortunately their research showed that if they were to do this they would be depleting the ozone layer and could potentially harm the Earth.
But a study performed by the National Center for Atmospheric Research (NCAR) cautioned that more research is needed before so-called geoengineering efforts are pursued. It specifically raised the alarm over the idea of regularly sending sulfate particles into the stratosphere to reduce the Earth’s temperature. It’s one of the most discussed geoengineering proposals put forth by Nobel laureate Paul Crutzen and others.