No one knows whether the cessation of the waste radiation of atomic energy exploitation or the cessation of coal and shaole conversion into fluid fuel will occur in time to permit the physical continuance of humans on planet Earth. What we do know however, as we have previously stated, is (1) that with the unselfish use of technology, it is now possible to care of all humanity at a higher standard of living than any have ever experienced and do so on a sustaining basis by employing only our daily energy income from Sun and gravity and (2) that we can do so in time to permit the healthy continuance of humans on planet Earth.

This quote, which actually explictly refers to the 'greenhouse effect', the 'cause' of Global warming, dates back to 1981. Nuff said.