From ROBERT WALKER
Mirrors built on the Earth’s surface would reflect light away before
it is absorbed and transformed into heat. Mirrors built on deserts could
cool the deserts, perhaps leading to increased rainfall. Cities at present
are warmer than their surroundings: adding mirrors to houses and skyscrapers
with flat roofs would counteract this. Anyone with a flat roof can do their
bit to reduce the greenhouse effect.
Robert Walker University of Oxford
