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

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.

I think that once people understand the great risks that climate change poses, they will naturally want to choose products and services that cause little or no emissions of greenhouse gases, which means 'low-carbon consumption.' This will apply across the board, including electricity, heating, transport and food.

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.

Give up meat to save the planet.

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

I think it's important that people think about what they are doing and that includes what they are eating. I am 61 now and attitudes towards drinking and driving have changed radically since I was a student. People change their notion of what is responsible. They will increasingly ask about the carbon content of their food.