David Keith, director of the Institute for Sustainable Energy, Environment and Economy, has proposed releasing engineered nano-sized discs in the earth’s atmosphere to “offset global warming”- and that for just $ 1 billion of your taxpayer-money annually.
“You could manipulate the Earth’s climate at large scale for a cost that’s of the order of $1 billion a year. It sounds like a lot of money, but compared to the costs of managing other environmental problems or climate change, that is peanuts.”, Keith told Nanowerk News.
Keith also made clear that mentioning the annual cost is not necessarily an argument pro or con, but an “indication” rather, “that risk, not cost, will be the deciding issue.”
Until now, scientists have mainly looked at injecting the volcano-mimicking sulphur dioxide into the upper atmosphere as a way to “get the maximum cooling benefit.” This new nano-particle proposal of spraying “levitating” engineered nano-particles in the atmosphere might have serious drawbacks, Keith acknowledges:
“A downside of both these new ideas is they would do something that nature has never seen before. It’s easier to think of new ideas than to understand their effectiveness and environmental risks.”