All things energy, from solar and wind power to efficiency and off-grid living.
Yesterday, Al Gore gave a speech challenging the United States to set a surprising new goal: To produce 100-percent of our electricity from renewable and carbon-free sources within 10 years.
Tell us what you think. Is this goal far too ambitious, or is it achievable? Is setting this kind of challenge just the thing we need to start thinking seriously about renewable energy, or should we be aiming for more realistic goals?