That environmentalists are prone to change their minds about a technology is nothing new. In the 60’s, for example, they were pro-nuclear, but in the 70’s they were no-nuke.  In the eighties they were pro-wind power, today many say it is bad.  So it perhaps shouldn’t surprise us that when President Bush announced a major investment in hydrogen technology, many of the Greens who had previously been for it, are now turning against it.  And the reason … well, it might destroy the ozone layer.  Yes, according to some researchers at the California Institute of Technology, widespread use of hydrogen fuel might result in its seepage from pipelines and storage units and travel skyward to help fry us all. It seems as though you can’t please some people almost any of the time!