One idea to cool the planet involves repairing the ozone hole with calcite particles. Here, a
composite image of Earth snapped by the NASA/NOAA Suomi National Polar-orbiting Partnership spacecraft on April 9, 2015.
Credit: Ocean Biology Processing Group at NASA's Goddard Space Flight Center
The idea of geoengineering a solution to climate change has been discussed for decades, and now a new study proposes a plan that would cool the planet while repairing a hole in the ozone layer at the same time.
The trick: using calcite particles injected high into the stratosphere to reflect sunlight back into space, according to the study by a group from Harvard University published Dec. 12 in the journal Proceedings of the National Academy of Sciences.
While scientists say geoengineering is not a substitute for cutting emissions of heat-trapping greenhouse gases, they say that more research is needed on geoengineering as a possible additional measure to help the planet. https://www.livescience.com/57183-could-limestone-sunshade-cool-earth.html
