Arctic Quote by Jerry Brown

The bleak truth is that, under normal conditions, most of North America and Europe are buried under about 1.5km of ice. This bitterly frigid…

— Philip K. Chapman

Is it 10 years, 20, 50 before we reach that tipping point where climate change becomes irreversible? Nobody can know. There's clearly a probability…

— Vinod Khosla

The most recent science including from Jim Hansen, the foremost climate scientist, suggests that we could see as much as, according to his study,…

— Jill Stein

“Without us, Earth’s geology will grind on. Winds and rain and blowing sand will dissolve and bury the artifacts of our civilization. Human-caused climate…

— Randall Munroe

We thought we knew 20 years ago. That led to some alarmist books – mine included – because it looked clear-cut, but it hasn’t…

— James Lovelock

The earth's history over the past several million years is that for every 100,000 years, we go through a dramatic climatic cycle where we…

— Hugh Ross

We are now running out of time, and the question now is not what is happening to the climate, but how bad will it…

— Jonathon Porritt

Geological change usually takes thousands of years to happen but we are seeing the climate changing not just in our lifetimes but also year…

— James Lovelock

Climate has been changing for billions of years.

— Buzz Aldrin

Global warming has long since passed from scientific hypothesis to the realm of pseudo-scientific mumbo-jumbo.

— David Deming

If things continue as they have been, in five years, at the latest, we will need to acknowledge that something is fundamentally wrong with…

— Hans von Storch

How long have we got? We have to stabilize emissions of carbon dioxide within a decade, or temperatures will warm by more than one…

— James Hansen