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The chart above shows domestic fuel prices for Great Britain from 1914 to 2007. The data up to 1985 was compiled by Horace Herring and Rodney Evans using this source and been updated with more recent figures from UK government statistics. It is expressed in UK pounds for the year 2000, adjusted by the retail price index (i.e the price of energy related to other 'real' goods such as food).

Will financial chaos turn America and the world away from environmental concern yet again? Or will refocusing on our energy and environmental problems restructure the way the world does business? We'll know soon enough. Maybe this time, green will help get us out of the red.

Back in 1998, Forbes magazine ran a story pooh-poohing the solar power industry. The article called the concept of spurring demand to increase production and bring costs down “an error in the history of solar energy” and brushed aside a million solar roofs proposal from then-President Bill Clinton with the line, “The religion of environmentalism dies hard.”

Proving once again that there is little new under the sun (or the waves) is this 1932 version of the wave power generators that we showed here and here. It works on the basis of an "inertia motor" where "When a wave starts to lift the hollow sphere, the massive weight inside, because of its inertia, resists the movement and exerts terrific pressure in the lower cylinder. Finally the inertia of the weight is overcome. Then it possesses momentum. When the sphere reaches the crest of a wave, the combined effort of the momentum and the recoil of the huge, semi-elliptic springs exerts an equal pressure in the upper cylinder. The tremendous pressure is applied to oil, which, in turn, operates a special turbine which runs a generator. The current is conducted to the shore by submarine cable."

It's been some time since anyone accused GM of making a good move. The company surrendered its title as the world's top-selling carmaker to Toyota this year, in part because GM underestimated drivers' appetite for leaner, greener cars — a desire filled spectacularly by Toyota's Prius.

Nuclear energy is often touted by its supporters as being cheap, clean and plentiful. It's often stated in articles on the subject that Patrick Moore, purported co-founder of Greenpeace, is in favor of increased nuclear plants. In fact, there are about 30 new American nuclear plants currently on the drawing board. So, does nuclear live up to the claims of its supporters? Well, for one, it might not be as cheap as we've been told. Two reactors planned for Levy County, Florida may clock in at more than twice their original estimate at $10 billion. You can install a lot of distributed solar capacity for that kind of money. In fact Moody's Investor Services gave an estimate in October of $6,000 per kilowatt that Jim Hempstead (a senior credit officer at Moody's) stated in a recent article in the Wall Street Journal has been "blown by" after reviewing recent estimates from a handful of "experienced different nuclear operators".

ACROSS the road from a golf course and next to a verdant, cow-filled field in Whetstone, a village about as far from the sea as it is possible to get in England, there is a ship's engine-room in a barn. The area is dripping with history—Frank Whittle, one of the inventors of the jet engine, used a neighbouring shed for his project—but this is not some clanking historical curiosity, such as a steam engine rebuilt by an amateur enthusiast. The whirring gas turbine and whining motor being put through their paces in bucolic Leicestershire are at the cutting edge of maritime engineering. The electric drive being tested there could represent the next leap forward in ship design, as significant a technological shift as the one from sail to steam power in the 19th century.

The 1958 television episode looks toward the future of American transportation. Once you dig past the kitschy sci-fi aspects, this auto-pian vision terrifyingly reveals the values which have led us to our current predicament. Everything becomes super-highway accessible – from the steepest mountains of the U.S. to the Sphinx in Egypt.

They have successfully created a solar coating that is the most cost-efficient solar energy source ever. Their PowerSheet cells contrast the current solar technology systems by reducing the cost of production from $3 a watt to a mere 30 cents per watt. This makes, for the first time in history, solar power cheaper than burning coal.