As we move away from coal and oil, what it will take to move forward in establishing a new, clean power economy.
Gas for heating is in short supply in many European countries as Russia and Ukraine accuse each other of interrupting supplies.
The drop in gas prices is good news for consumers, but spells trouble for global warming and international stability.
Lawmakers and environmentalist say now is the time to demand more fuel-efficient cars from Detroit automakers.
Energy analyst Michael Klare says the world's largest oil fields are running out of oil at twice the rate that we'd previously assumed.
Crude prices fell below $70 dollars a barrel for the first time in 14 months -- a 15% decline in value from just three months ago.
Tax credits for wind, solar and other clean energy sources won support in Congress; the ban on offshore oil drilling comes to an end.
Hedge fund manager Michael Masters says the reason behind the wildly fluctuating price of oil is market manipulation by institutional investors.
Thomas Friedman says in a world that is hot, flat and crowded, clean technology is the next great global industry.
How hurricanes affect oil prices -- which recently dropped to a five-month low -- and what we can look forward to in the coming weeks.