Climate change will affect ...

Climate change will affect the basic elements of life for people around the world - access to water, food production, health, and the environment. Hundreds of millions of people could suffer hunger, water shortages and coastal flooding as the world warms.
 Nicholas Stern

Quotes from the same author

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.
 Nicholas Stern
Looking back, I underestimated the risks. The planet and the atmosphere seem to be absorbing less carbon than we expected, and emissions are rising pretty strongly. Some of the effects are coming through more quickly than we thought then.
 Nicholas Stern
It's very important that there should be cross-fertilisation between government and academia. Both parties can benefit from having a better understanding of how the other works.
 Nicholas Stern
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.
 Nicholas Stern
Give up meat to save the planet.
 Nicholas Stern