Wind, nuclear, and coal all look expensive compared to natural gas generation.
As oil prices continue to rise, the idea of natural gas as a primary fuel source gains appeal
The job market is slowly getting better, but unemployment and underemployment remain very high.
Engine efficiency has vastly improved in recent decades, but that has made cars bigger and faster, rather than more fuel-efficient
Over the past 50 years, America's poltical think tanks have shifted towards political combat and away from nonpartisan research.