Harvard scientists proposed releasing chalk-like particles 20 km high to study solar geoengineering, but the experiment was shelved before any particle release
A Harvard research proposal to test chalk particles for cooling the planet was cancelled. The Stratospheric Controlled Perturbation Experiment faced public and political opposition. This experiment aimed to mimic volcanic cooling effects by reflecting sunlight. While the field study ended, laboratory research into solar geoengineering continues. Scientists emphasize the need for more evidence before considering such strategies.
A Harvard research proposal to test chalk particles for cooling the planet was cancelled. The Stratospheric Controlled Perturbation Experiment faced public and political opposition. This experiment aimed to mimic volcanic cooling effects by reflecting sunlight. While the field study ended, laboratory research into solar geoengineering continues. Scientists emphasize the need for more evidence before considering such strategies.
