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

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.

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.

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

The only way you're going to reach places you've never gone is if you trust God's direction to do things you've never done.

When you complete yourself is when you can complete someone else.

I was born with a chronic anxiety about the weather.

While there are a great many agents in nature which boost libido and enhance sexual function, chocolate alone actually promotes the brain chemistry of being in love.

One day my dad said, "If you guys ever stop singing, I'll drop you like a hot potato." That's what he said. It hurt me. You don't say that to children and I never forgot it.

There are three things I was born with in this world, and there are three things I will have until the day I die-hope, determination, and song.

Sleep 'til you're hungry, eat 'til you're sleepy.

If some beggar steals a bridle he'll be hung by a man who's stolen a horse.

Catch me if you can -A

Women are lining up to marry me. Legend has it, I know how to do it.