aerosol sunscreen in the atmosphere foolish/better with giant space umbrella

Scientists propose an aerosol sunscreen in the atmosphere to curb global warming

Aircrafts designed to fly at altitudes of 20km can disperse the aerosols as required: Researchers.

Firstpost

2 hours ago

Could an anti-global warming atmospheric spraying program really work?

A program to reduce Earth's heat capture by injecting aerosols into the atmosphere from high-altitude aircraft is possible, but unreasonably costly with current ...

physicsworld.com

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BBC - Future - How a giant space umbrella could stop global warming

www.bbc.com/.../20160425-how-a-giant-space-umbrella-could-stop-global-warming

Apr 26, 2016 - But could a giant space umbrella help cool down our planet? ... After that they'd need regular nudges from 'shepherd dog satellites' to stop ... Even on a sunny day, the light-scattering particles could turn the blue sky white.