External Quote:David Keith on the Australian ABC . . .
http://www.abc.net.au/lateline/content/2012/s3639096.htm
Transcript
TONY JONES, PRESENTER: Earlier today I spoke with geoengineering expert David Keith, Professor of Applied Physics at the Harvard School of Engineering and Applied Sciences. He was in Calgary, Canada.
David Keith, thanks for joining us.
TONY JONES: And final question, because you probably - if someone decided to do this, even if a group of nations decided to do this, there'd be tremendous scepticism in the public and you would, I imagine, get widespread protests, particularly when people realise that with sulphate particles in the atmosphere you'd actually change the colour of the sky, which has a really big psychological effect on people, you would imagine.
How serious first of all would that change of colour be if you really were able to do it on a global scale and would you expect protests?
DAVID KEITH: I think the change of colour would probably be invisible. I think it wouldn't happen. So people have published papers where they get that, but only where they assume a quite large amount of geoengineering. They assume that geoengineering compensates all of the effect of climate change, which I think is a kind of nonsense policy.
A key part of that:
External Quote:maybe starting in 50 years,