An analysis done by Biofuels Digest has come to the very surprising conclusion that an electric car will produce 30% more carbon dioxide emissions over its lifetime than a car powered by E85 corn ethanol. Not only that, the study also found that the same electric car will produce 21% more carbon dioxide than even a gasoline powered car.

These claims assume that 100% of the electricity for the EV comes from coal-fired power plants and that a comparable car would get 35 mpg—both of which seem like unrealistic assumptions. So I dug around the internet today to try and come up with more realistic numbers.

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The Optibike OB1 electric bike gets an equivalent of 2,287 MPG.* Could bikes like these be the future of transportation?

Ever wonder what happens when you cross the finest mountain bike components money can buy, an 850w brushless DC motor and a 20ah lithium-ion battery with motocross styling and sensibilities? You get the Optibike OB1, an electric bike that can get up to 45 miles on a nine-cent charge, and what is arguably the finest electric bicycle in the world.

In fact, the Optibike OB1 even found a spot in the California Academy of Sciences museum, touted as “the future of transportation.” There are only 24 OB1’s made per year. When one of them is bought, the owner becomes part of an elite club of enthusiastic riders. And for four fun-filled days in August, I was lucky enough to be a member of that club — or at least able to pretend like I was after being provided one for a short term test drive.

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Arizona Public Service, the state’s largest electricity provider, has secured $70.5 million in stimulus funds to expand an innovative project that turns carbon dioxide emissions from a coal power plant into biofuel using algae. While part of the funds will be used to scale up the algae processing portion, some of the funds will also be used to investigate the potential benefits of turning the coal into a gas prior to burning it for power.

The concept of creating two products — electricity and fuel — from the same process is known as cogeneration. In this case, the cogeneration also helps to reduce environmental pollution. It’s an idea that has been gathering support as a way to make coal less polluting while finding an additional revenue source to pay for the pollution control itself. In fact, a while back I reported on a similar pilot project in Oregon.

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Global warming. Climate change. The greatest threat to continued human survival. The rhetoric these days can be awfully scary regarding new energy and oil. Sometimes it feels like we’ve all been doomed already by a hyper-active media always looking for the “next big story” to terrify us with. But I don’t really take anything seriously, so I am always on the lookout for a fun twist on a real problem.

What could be fun about climate change, you ask? Well, besides the fact that my home might end up as beach front property one day if we don’t mend our sins, how about a race? One that challenges contestants to go 100 miles on a single gallon of gas? That is the goal of the One-Gallon Challenge, where six contestants and their very different vehicles have to make the journey from Greenfield, MA to Boston in three hours using as little fuel as possible.

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Despite government rebates for hybrids offered to consumers in U.S. and Canada, the programs are failing to produce environmental benefits, yet the programs continue to cost consumers. This according to a new study, “Green Drivers or Free Riders? An Analysis of Tax Rebates for Hybrid Vehicles,” from the University of British Columbia (UBC).

The study finds that hybrid sales have not replaced gas guzzling SUVS, but rather have replaced small, relatively fuel-efficient, conventional cars. Too bad considering SUVS, trucks and vans produce substantially greater carbon emissions.

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