We are the intelligent elite among animal life on earth and whatever our mistakes, [Earth] needs us. This may seem an odd statement after all that I have said about the way 20th century humans became almost a planetary disease organism. But it has taken [Earth] 2.5 billion years to evolve an animal that can think and communicate its thoughts. If we become extinct she has little chance of evolving another.

I'm not a pessimist, even though I do think awful things are going to happen.

Climate change now represents so urgent a threat to mankind that the only way to deal with it is by suspending democracy.

Humans are too stupid to prevent climate change from radically impacting on our lives over the coming decades.

Sadly, it's much easier to create a desert than a forest.

The inertia of humans is so huge that you can't really do anything meaningful.

I suspect any worries about genetic engineering may be unnecessary. Genetic mutations have always happened naturally, anyway.