Submission + - Space Tourism Rockets May Help Shrink The Icecaps (wired.com)
Virgin Galactic, whose SpaceShipTwo just made its first solo flight (and uses the type of fuel discussed in the study), is listening to the scientists concerns, CEO George Whitesides saying "I think we and others in the industry welcome the opportunity to talk about all of these issues..." SpaceShipTwo does use a hybrid engine, "because of its significantly lower environmental impact than other designs.” and Whitesides stresses “I think as we look at this more, we’ll find the impact will be far smaller than that set out in the paper... In any case, I welcome the conversation.”