Argument: Solar ring is cheapest solar shading solution
- Debate: Geoengineering, solar shading - pro argument.
Robert Roy Britt. "Space Ring Could Shade Earth and Stop Global Warming". Live Science. 27 June 2005 - "the price tag would knock the socks off even a big-budget agency like NASA: $6 trillion to $200 trillion for the particle approach. Deploying tiny spacecraft would come at a relative bargain: a mere $500 billion tops."