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

A diet that relies heavily on meat production results in higher emissions than a typical vegetarian diet. Different individuals will make different choices. However, the debate about climate change should not be dumbed down to a single slogan, such as 'give up meat to save the planet.

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.

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

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.

To claim the World Bank is just an extension of US foreign policy is just wrong.

The one way of guaranteeing to fail is to assume that we will.