Oil experts Matt Simmons and Henry Groppe talk about the future of oil prices, its impact on Houston, and the potential for conservation. (Houston Chronicle — Rick Casey)

Matt Simmons, one of the world’s leading oil analysts and a lifelong Republican, talks about peak oil and describes his party’s presidential candidate as “energy illiterate.” (Fortune Magazine — Brian O’Keefe)

As gas prices continue to fluctuate near $4 a gallon and Americans continue to feel the pain at the pump, many energy experts are pointing out the obvious — the price of oil is not going to drop much while worldwide demand increases by one million barrels a day. (Grist — Joseph Romm)