Accepting Quote by Chris de Freitas

“CO2 had increased due to human activities, CO2 will continue to increase unless changes are made, and these increases will affect weather, agriculture, and…

— Naomi Oreskes

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 warming we've experienced in the late 20th century could just as easily be explained by small decreases in cloud cover - natural changes…

— Willie Soon

The scientific evidence is now overwhelming: climate change presents very serious global risks, and it demands an urgent global response

— Nicholas Stern

We thus find ourselves in the situation that the entire theory of man-made global warming-with its repercussions in science, and its important consequences for…

— Zbigniew Jaworowski

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

I have never met a geologist or leading scientist who believes adding more carbon dioxide to the atmosphere will have any significant effect on…

— Gina Rinehart

Significant new peer-reviewed research has cast even more doubt on the hypothesis of dangerous human-caused global warming.

— Antonino Zichichi

I think there's plenty of evidence that we need to stop spewing so much carbon into the air, that we're contributing to climate change…

— Lamar Alexander

My first inclination is to be a bit skeptical about the claims that human-produced carbon dioxide is the direct contributor to global warming.

— Buzz Aldrin

There is a majority of scientists that say that global carbon emissions by humans causes some changes in the climate.

— Marco Rubio

There is no doubt in my mind that the literature on climate change overwhelmingly supports the hypothesis that climate change is caused by humans.…

— Richard Tol