The first test of a project backed to spray millions of tonnes of chalk into the stratosphere, in an attempt to ‘dim the sun’ and cool the Earth, could happen in June.

Harvard University experts will test the system by sending a large balloon 12 miles above the Swedish town of Kiruna and have it drop 2kg of chalk dust into the stratosphere.

The aim of the estimated $3 million mission, backed by billionaire Bill Gates, is to have the chalk deflect a portion of the sun’s radiation, stop it from hitting the surface, and cool the planet.

The idea has been heavily criticized since its inception, with project director Frank Keutsch even calling the need for this scale of geo-engineering…

 

Read full story here: Source: Bill Gates: Ready To Spray Chalk Dust Into Stratosphere To Cool Planet