Since 2007, Bill Gates has funded research initiatives that, in part, provide grants for experiments related to solar radiation management — a form of geoengineering controversially proposed as a last ...

CLIMATEWIRE | Harvard University ended a solar geoengineering research project after years of setbacks derailed efforts to infuse small parts of the sky with sunlight-blocking aerosols. The principal ...

A controversial, Bill Gates-backed sun-blocking experiment has been postponed for ethical reasons. Concerned groups want a clearer understanding of consequences before the launch. The test was ...

A giant balloon rises into the sky, reaching the stratosphere at an altitude of about 20 km. From beneath the balloon, calcium carbonate dust is released, reflecting strong sunlight before it reaches ...

Last year was the hottest year in the global instrumental temperature record. Since 1960, the atmospheric concentration of carbon dioxide has risen from 315 to 425 parts per million, largely as a ...

Environmental Studies Professor Sikina Jinnah recently wrapped up almost three years of work co-chairing Harvard University’s SCoPEX Advisory Committee, one of the world’s first efforts to design and ...

Since 2007, Bill Gates has funded research initiatives that, in part, provide grants for experiments related to solar radiation management — a form of geoengineering controversially proposed as a last ...