"There are many potential problems with this concept, and hopefully it never comes to full fruition."

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Response to Parker/Keith in Washington Post. "I would conclude in saying that I thought Parker and Keith wrote an effective article, with an easy to follow organization and just enough individual style and wit to capture the reader. I do not agree with everything that brought to light or some of their techniques, but that is why it is an opinion piece."

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"Ultimately, any geoengineering project will have to be supplemented by other measures, as even raising the albedo, or reflectivity, of the atmosphere will not be able to stop ocean acidification, trash pile-up, or any number of other difficulties which have emerged over the past several decades that have yet to be addressed. Overall, geoengineering is presented as a solution with harmful effects that nevertheless may be necessary in an emergency."

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"There is a fine line between creative ingenuity and wishful thinking-between science and science fiction. We must stay the course and do the hard work on the roots of the problem. As a basis for policy and action today, the simple engineering solution does not exist."

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