Imagine a giant asteroid on a direct collision course with Earth. That is the equivalent of what we face now with climate change, yet we dither.

The five warmest years over the last century occurred in the last eight years.

The fact is fossil fuel carbon will stay in the surface climate system for millennia.

The United States did not sign Kyoto, yet its emissions are not that different from the countries that did sign it.

The scientific excitement in comparing theory with data, and developing some understanding of global changes that are occurring, is what makes all the other stuff worth it.

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.

The evidence for human-made climate change is overwhelming.