The scientific evidence is now overwhelming: climate change presents very serious global risks, and it demands an urgent global response.

Meat is a wasteful use of water and creates a lot of greenhouse gases. It puts enormous pressure on the world's resources. A vegetarian diet is better.

What we are talking about is extended world war...People would move on a massive scale. Hundreds of millions, probably billions of people would have to move.

Climate change and global poverty are two sides of the same coin. Both challenges must be addressed together. If we fail on one, we will also fail on the other.

Climate change represents the greatest and widest-ranging market failure ever seen

There is still time to avoid the worst impacts of climate change, if we take strong action now.

Adaptation is the only means to reduce the now-unavoidable costs of climate change over the next few decades

If you look at all the serious scientists in the world, there is no big disagreement on the basics of this...it would be absolute lunacy to act as if climate change is not occurring.

My father's generation's crisis was fighting fascism. Ours is fighting climate change. It is much harder because you can't see it, it is not an obvious threat. But the solution is in our hands.

Climate change is a result of the greatest market failure the world has seen...We risk damages on a scale larger than the two world wars of the last century.

Science and policy-making thrive on challenge and questioning; they are vital to the health of inquiry and democracy.

Painful truth is better than a pleasant lie.

No one wants to take the risk.They just have to...

Write your story as it needs to be written. Write it honestly, and tell it as best you can. I'm not sure that there are any other rules. Not ones that matter.

A relationship with an imaginary woman is preferable to a relationship with a real one.

Feminism, as it stands, well... stands. It has ground to a halt.

I cannot believe that in all the years that there have been female stand-ups, there has never been a show just for them.

Whenever I get a free day, I drive up to some part of California that looks promising on the map.

So end-to-end encryption, keeps things encrypted and that means that law enforcement, without a warrant, cannot read that information.

One of the soundest rules to remember when making forecasts in the field of economics is that whatever is to happen is happening already.

I've always been this insane. Isn't that interesting?