No cheap oil left, but we have options

Republican readers may be sitting back and ordering Christmas sweaters featuring newborns sitting on oil rigs ("Drill, baby, drill"), but I wouldn't be doing my job if I didn't remind everyone: If you're hoping that drilling for oil is sufficient to create low, stable energy prices and U.S. energy independence, your information about energy costs and alternatives is out of date. Even the reddest of red hat wearers has reasons to be in favor of more renewable energy development in the U.S.

After 165 years of oil exploration in the U.S., we've found all the cheap, readily accessible oil. It's po...