
Before TreeHugger know-it-alls Mike and Matt came along with their more sophisticated understanding of these issues, I spent four years dissing the idea of hydrogen cars or the long-term sustainability of any kind of private vehicle when they need a petroleum powered infrastructure. Nevertheless when I was invited to drive a GM hydrogen fuelled, fuel cell powered electric SUV I couldn't pass it up, and engineer Dick Kauling's boyish enthusiasm for the subject was overwhelming.
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On Thursday, Rick Wagoner, Chairman and CEO of General Motors came to San Francisco 

As long theorized, evidence has emerged that too extensive planting of Bt producing cotton in one setting can result in resistance to Bt by the ubiquitous Boll Worm. So how to mitigate against this? Pay some farmers not to use Bt modified crop seed? Encourage organic cotton farming round and about the Monsanto style plots? The solution seems like it would be a long term challenge if the economic benefits of using Bt producing cotton are high for the farmers.

