Obama’s big oil decision

Despite his hopes for renewable energy, Barack Obama faces tough choices early in his term on whether to extract more oil within the US. Americans are still years, maybe decades, from kicking the oil habit. One reserve

The certainty stops there, however, as several oil firms such as Shell and Chevron test ways to extract the substance as cheaply, cleanly, and with as little water and electricity as possible. Whether they can do all that is Mr. Obama’s urgent dilemma