A few issues have the
potential to turn the tables
on the current environmental picture. These "game changers" include methane hydrates (a potentially large source of energy that is currently untapped), the prospect of a hydrogen-powered economy, and the regulation of contaminants that are only now emerging as problems in our water supply.

Send us your ideas for potential Game Changers at ourfuture@rand.org.

Next section: Fire and Ice: Methane Hydrates