Deaths-head Jester

[The Project]
[The ApocaDocs]
[Equal Share]
The Six Scenarios:
[Species Collapse]
[Infectious Disease]
[Climate Chaos]
[Resource Depletion]
[Biology Breach]


It's weekly, funny, and free!


More than 5,600 stories!

A great gift
for crisis deniers!

The ApocaDocs have a Book!
Humoring the Horror of the
Converging Emergencies
94 color pages
$24.99 now $15!
Or read FREE online!


Ping this story
in social media:

Posted Sun Sep 19 2010: from Institute for Ethics and Emerging Technologies:
Could precisely engineered nanoparticles provide a novel geoengineering tool?
In a nutshell, David's idea is to engineer discs around 10 micrometers across and 50 nanometers thick, with a core of aluminum, a top layer of aluminum oxide, and a bottom layer of barium titanate. Injected high enough into the atmosphere (so Brownian motion didn't muck things up) the discs should align with the lighter aluminum/aluminum oxide side facing up, and the heavier barium titanate side facing down. This is important, because the way these two surfaces interact with air molecules when the particles heat up - as they would do in sunlight - means that there would be a net force pushing the discs up (photophoresis). In effect, the particles would levitate to a stable position in the atmosphere, while keeping their shiny side to the sun - thus reflecting sunlight away from the earth (or increasing albedo).... The neat thing of course is that this is a concept that can be tested reasonably easily in the lab, using simulated atmospheres and prototype particles. And with advances in materials manufacturing in recent years, it shouldn't be too hard to make small batches of the discs.... In his paper, David estimates that around 10 billion kg of these nano-discs would be needed. That's a lot - but probably economically viable with large-scale investment in production and if the benefits were deemed important enough (David runs the figures assuming the cost of manufacture is less than 1 percent the cost of abating CO2 emissions, and arrives at a cost of less than $60/kg).
[Read more stories about: geoengineering, unintended consequences]

No reader quips yet -- be the first!

Got a PaniQuip?

Your Quip (limit 140 characters, no links, just wit):

First name:

The text shown in the Web image to the right:

We reserve the right to reuse, remove, or refuse any entry.

'Doc Michael says:
Only $600,000,000,000 dollars, and I can still run my lights all night? Let's do it!
Although I wonder how we'd get 10 billion kilograms of these things up there. Oh yeah -- about a million rocket launches of 10,000-kilo payload!

More stories:
  • Permafrost temp rise in Siberia: 3 degrees
  • Obama administration leaves climate change to Congress, not the courts
  • (Could precisely engineered nanoparticles provide a novel geoengineering tool?)
  • Rat-eating opossums now run amok in Brooklyn
  • Super Rare Asian "Unicorn" Captured, Dies in Captivity

  • Want to explore more?
    Try the PaniCloud!
    Copyright 2010 The