Stratospheric Aerosol Injection (SAI)

They say one goal is to block sunlight. Warning: Plants need sunlight and CO2 to produce our food.

This report named Harvard University and Bill Gates (co-founder of Microsoft) as some of the public faces for this program:

https://www.geoengineeringmonitor.org/wp-content/uploads/2021/04/stratospheric-aerosol-injection.pdf