Action Quote by Mitt Romney

I have to admit that, until recently, I was somewhat wary of the (global) warming debate. I believe it is now our responsibility to…

— Rupert Murdoch

Climate change: I say the debate is over. We know the science, we see the threat and we know that the time for action…

— Arnold Schwarzenegger

Many people have the impression that there is significant scientific disagreement about global climate change. It's time to lay that misapprehension to rest. There…

— Naomi Oreskes

The need to do something about global warming is obvious. And it's also pretty clear that the public understands the need for change and…

— Chellie Pingree

Politicians and some of the scientists like to say that there's a consensus now on global warming or the science has been settled, but…

— Roy Spencer

The issue of climate change is one that we ignore at our own peril. There may still be disputes about exactly how much we're…

— Barack Obama

The debate is over. The scientific community has spoken in a virtually unanimous voice. Climate change is real. It is caused by human activity.

— Bernie Sanders

Thousands of climate scientists agree that global warming is not only the most threatening environmental problem but also one of the greatest challenges facing…

— Leonardo DiCaprio

Global warming is such a politically charged issue that we are losing our perspective on the issue and more importantly losing an open forum…

— Topper Shutt

It should simply be an empirical matter whether the climate is changing or not and whether we're responsible. But the various sides of the…

— Ian Mcewan

There is much debate in the scientific community as to the precise sources of global warming.

— Pat Toomey

As a geologist, I love Earth observations, but it is ridiculous to tie this objective to a 'consensus' that humans are causing global warming…

— Harrison Schmitt