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

You never know with politicians what they are really saying. And I don't say that in a negative way-they have an appalling job.

If it hadn't been for the Cold War, neither Russia nor America would have been sending people into space.

We live at a time when emotions and feelings count more than truth, and there is a vast ignorance of science

The world has not warmed up very much since the millennium. Twelve years is a reasonable time... it (the temperature) has stayed almost constant, whereas it should have been rising - carbon dioxide is rising, no question about that.

I'm a scientist, not a theologian. I don't know if there is a God or not. Religion requires certainty.

Those who fail to see that population growth and climate change are two sides of the same coin are either ignorant or hiding from the truth. These two huge environmental problems are inseparable and to discuss one while ignoring the other is irrational.