Shai Agassi, the Silicon Valley entrepreneur who dreamed of a world without oil, is stepping down as chief executive of Better Place, the plug-in car company he founded in 2007.

FORBES: Better Place Finds A Better CEO; Founder Shai Agassi Steps Aside

Mr Cameron has no such oil lake to call his own, but his support would provide some political cover if Mr Obama decided to release oil from the SPR without backing from the International Energy Agency, the rich-world oil club and supposed custodian of the world's strategic reserves.

ECONOMIST: Oil reserves

Without cheap, plentiful oil the world will have trouble producing enough food to sustain its burgeoning population, and plane travel will be the least of our concerns.

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And we must all work harder to secure and fully implement the new standard that will see oil, gas and mining companies reporting project by project payments across the world without exception.

WSJ: David Cameron: A British-American Tax and Trade Agenda

But many cities are still without running water, and the country with the second-largest oil reserves in the world is importing gasoline.

FORBES: Desert Storm

If the oceans do not make your heart go pitter-patter, how about engineering a bacteria that eats carbon dioxide -- and thus helps protect the world from overheating -- AND excretes fuel which will allow us to drive our cars and machines, without oil?

CNN: Mars can wait. Oceans can't