Roger Pielke
Roger Pielke
altered associated carbon changes climate cover doubling effect land last occur
Through land cover changes over the last 300 years, we may have already altered the climate more than would occur associated with the ... effect of a doubling of carbon dioxide,
choosing fly future good open resources shuttle sooner space step time
It's a good time to take a step back and think about the future of the space program, ... Choosing not to fly the shuttle would open up resources to get on sooner with what comes next.