Elected leaders in Alameda, Calif., voted early on Wednesday to stop scientists from testing a device that might one day be used to artificially cool the planet, overruling city staff members who had found the experiment posed no danger.
The test involved spraying tiny sea-salt particles across the flight deck of a decommissioned aircraft carrier, the U.S.S.
Versions of that device could eventually be used to spray the material skyward, making clouds brighter so that they reflect more sunlight away from Earth.
Scientists say that could help to cool the planet and to fight the effects of global warming.
That has pushed the idea of deliberately intervening in climate systems closer to reality.
Locations:
Alameda , Calif, Alameda, San Francisco Bay