Angle Quote by John Williams

It's likely that CO2 has some warming effect, but real proof of that hypothesis is tricky. You have to confirm by observation exactly how…

— Nigel Calder

The atmospheric CO2 concentration is rising - mainly due to the burning of fossil fuels. It's agreed that this build-up will, in itself, induce…

— Martin Rees

... For nearly a decade now, there has been no global warming. Even though atmospheric CO2 has continued to accumulate - up about 4…

— Walter Cunningham

CO2 cannot cause global warming. I'll tell you why. It doesn't mix well with the atmosphere, for one. For two, its specific gravity is…

— Joe Bastardi

We are still learning how exactly the Earth reacts to increased CO2 and other greenhouse gases. We know it leads to warming seas which…

— Graciela Chichilnisky

“The retreat of the Arctic sea ice, the warming of the oceans, the rapid shrinking of the glaciers, the redistribution of species, the thawing…

— Elizabeth Kolbert

Are global temperatures rising? Surely, they were rising from the late 1970s to 1998, but 'there has been no net global warming since 1998.'…

— John R. Lott Jr

I am not at all convinced that human emissions of CO2 are adding to global warming.... I remain to be convinced about the theory…

— Nick Minchin

The burning of fossil fuels has altered the amount of carbon dioxide in the atmosphere so rapidly and so abundantly that now, we are…

— Sylvia Earle

The Earth is warming but physical evidence from around the world tells us that human-emitted carbon dioxide has played only a minor role in…

— Fred Singer

There is no significant man-made global warming at this time, there has been none in the past and there is no reason to fear…

— John Coleman

... those who are absolutely certain that the rise in temperatures is due solely to carbon dioxide have no scientific justification. It's pure guesswork.

— Henrik Svensmark