A company that uses solar energy to recover crude has scored financing from some big oil players, highlighting a growing niche of exploration.
Widespread electronic attacks on U.S. interests have amplified calls to fortify the U.S.'s aging electric grid from terrorism.
Big Oil has tried for years to bolster its green credentials. Royal Dutch Shell recently joined the environmental bandwagon.
The massive 2010 spill in the U.S. Gulf Coast was a result of "gross negligence and reckless" conduct by BP and other oil producers, a court ruled.