[cpdiii]

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.

Idiots. The will spend 3 million dollars for a balloon drop of chalk at 60,000 feet. A Mig 29 could be hired to do if for less that 100,000 dollars.

[21twelve]

2 kg!?

That’s what - 5 pounds!?

And at an altitude of 63,000 feet, I’m guessing the wind is pretty vigorous up there.