Conventional economic theory... counts the depletion of resources as the accumulation of wealth.

At 1.24 am on 26 April 1986 Chernobyl’s Unit 4 reactor exploded after staff disabled safety systems and performed an ill-advised experiment to check – ironically enough – the reactor’s safety.

We humans, one species of animal amongst millions, have now become the de facto guardians of the planet's climate stability.

If we are to save humanity and the planet from the worst mass extinction of all time, worse even than that at the end of the Permian, we must stop at two degrees.

You'd be forgiven for thinking that climate change means we'll have to sacrifice our creature comforts. But it doesn't have to be that way.

This is like playing Russian roulette with a Luger rather than a revolver. One bullet, one chamber - and we're pulling the trigger.

Human releases of carbon dioxide are almost certainly happening faster than any natural carbon release since the beginning of life on Earth.

Our evolutionary psychology preconditions us not to respond to threats which can be postponed until later.

I discovered science, and in the process I hope I became a better environmentalist.

If substantial methyl hydrate melt begins to occur in the Arctic Ocean basin, then the (carbon) accelerator will be jammed, and there will be nothing we can do to cut the speed of climate change.

Once the 'portals of the future close - in Amazonia, Siberia or the Arctic - we will find ourselves powerless to affect the outcome of this dreadful tale.

Merely having an open mind is nothing. The object of opening the mind, as of opening the mouth, is to shut it again on something solid.

Any journalist who holds the office writes in a straitjacket.

That you exist, is offense enough to arrest you.

It's never to late to do nothing at all.

It is curious that while one's education is the part of one's life over the conditions of which one has least individual control, the results of it are held to brand one irrevocably.

I just learned how to scuba dive. Id been scared to rely on one little air hose for oxygen, but swimming with all those fish is exhilarating.

Nobody is going to try to confiscate guns, although some Web sites know better: President Obama, they are certain, wants to.

I have a great memory. And actually, I remember Russia in some ways better than I remember Queens.

The potter is at enmity with the potter.

Too timid to talk back, I shot my adversary.