Washington Post: Heres a word guaranteed to start an argument among scientists and environmental activists: geoengineering. The word covers a variety of hypothetical technological fixes for the problem of climate change.
For example, tiny particles of sulfur dioxide could be sprayed into the upper atmosphere. That would mimic the effects of a volcanic eruption. The thin haze would reflect sunlight, cooling Earths surface. Our planet would literally be shinier when seen from space.
Many environmentalists and...