
Journal Journal: Guns and sunshades to rescue climate
bbc news is reporting about a "Plan B" to geoengineer our way out of global warming and climate change. "Consider the notion of shading the planet with mirrors. The US National Academy of Sciences found that 55,000 orbiting mirrors would reflect enough sunlight to counter about half the doubling of carbon dioxide. But each mirror must be 100 sq km; any larger and you would need a manufacturing plant on the Moon"