If we drive our fellow species to extinction, we will leave a far more desolate planet for our descendants than the world we inherited from our elders.

As a government employee, you can't testify against the government.

Until the public demands otherwise, the policy makers will continue to serve their financiers.

The last time the world was three degrees warmer than today-which is what we expect later this century-sea levels were 25m higher. So that is what we can look forward to if we don't act soon.

Policy decisions on climate change are being deliberated every day by those without full knowledge of the science, and often with intentional misinformation spawned by special interests.

In view of the immense power of natural weather and climate fluctuations and the great buffering capacity of the Earth, especially the ocean, it is easy to be skeptical about whether small anthropogenic changes of atmospheric composition can have important practical impacts.

The evidence for human-made climate change is overwhelming.