"The emission of green-house gases… is causing global warming at a rate that began as significant, has become alarming, and is simply unsustainable in the long-term. And by in the long-term I do not mean centuries ahead. I mean within the lifetime of my children certainly; and possibly within my own. And by 'unsustainable,' I do not mean a phenomenon causing problems of adjustment. I mean a challenge so far-reaching in its impact and irreversible in its destructive power, that it alters radically human experience."
Bill Clinton (State of the Union address, January, 1999):
"Our most fateful new challenge is the threat of global warming. 1998 was the warmest year ever recorded. Last year's heat waves, ice storms, and floods are but a hint of what future generations may endure if we don't act now."
He wrote a book and is releasing a movie on global warming. He is a true believer and is really worried about our weak response to this threat.
Jacques Chirac (after 2004 G8 Summit):
"It is absolutely obvious that global warming has started."
George H. W. Bush:
Said we needed to move the words spoken at the 1992 Rio, UN Convention on Climate Change "into concrete action to protect the planet."
Intergovernmental Panel on Climate Change (IPCC)
Concluded that global warming in the last 50 years is likely the result of increases in greenhouse gases.
National Oceanic Atmospheric Administration (NOOA):
"The greenhouse effect is unquestionably real and helps to regulate the temperature of our planet."
"Human activity has been increasing the concentration of greenhouse gases in the atmosphere (mostly carbon dioxide from combustion of coal, oil, and gas; plus a few other trace gases). There is no scientific debate on this point."
"Global surface temperatures have increased."