As buyers focus on higher mpg, does this mean larger vehicles are left out of the equation? Maybe not with the intelligent application of technology.

Read More [greencar.com]

Plug-in hybrids face the challenge of high battery costs. This plan just might work.

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Significant efficiency improvements come to full-size vehicles with new technology.

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Introducing the Tahoe Hybrid, Green Car Journal’s 2008 Green Car of the Year.

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Professor Thomas Wood has engineered a strain of the E. coli bacterium to produce a potentially large amount of hydrogen. By selectively deleting six specific genes, this new strain can produce 140 times more hydrogen than it normally would in its glucose conversion process. Wood thinks that the bacterium could be used to produce hydrogen “on-site” at a hydrogen filling station, eliminating the need to create a costly hydrogen transport and delivery system. We suppose that this means you would instead have to create a sugar delivery system to feed the bacteria. But that is probably simpler and cheaper.

As with almost all of these announcements, the technology is not ready for prime time. So don’t expect to see an “E. Coli hydrogen and production filling station” on your block any time soon.

R ead More [sciencedaily.com]

A research group at Penn State University announced last year that it is “only a couple of problems away” from perfecting a low-cost, scalable method for for water photoelectrolysis.  This technique uses visible light to convert water into hydrogen and oxygen.  The so-called “hydrogen economy” will need an effective technique for mass production of hydrogen, so this was a promising announcement.  However, experience has shown that those last little problems often turn out to be insurmountable.  Let’s hope this is an exception.

Read More [sciencedaily.com]