Buzz Aldrin [the second person to walk on the moon] calls for manned flight to Mars to overcome global problems - Telegraph
But while trying to spread the word about the possibilities of space, Dr Aldrin said he was sceptical of climate change theories.Feb '09: Former astronaut speaks out on global warming - BostonHerald.com
"I think the climate has been changing for billions of years," he said.
"If it's warming now, it may cool off later. I'm not in favour of just taking short-term isolated situations and depleting our resources to keep our climate just the way it is today.
"I'm not necessarily of the school that we are causing it all, I think the world is causing it."
SANTA FE, N.M. - Former astronaut Harrison Schmitt, who walked on the moon and once served New Mexico in the U.S. Senate, doesn’t believe that humans are causing global warming.Inconvenient quotes by Al Gore
"I don’t think the human effect is significant compared to the natural effect," said Schmitt, who is among 70 skeptics scheduled to speak next month at the International Conference on Climate Change in New York.