I think we have a very brief window of opportunity to deal with climate change. No longer than a decade at most.

What has become clear from the science is that we cannot burn all of the fossil fuels without creating a very different planet.

The carbon emissions from tar shale and tar sands would initiate a continual unfolding of climate disasters over the course of this century. We would be miserable stewards of creation. We would rob our own children and grandchildren.

The forcings that drive long-term climate change are not known with an accuracy sufficient to define future climate change.

What we are doing to the future of our children, and the other species on the planet, is a clear moral issue.

Rising carbon price is essential to 'decarbonize' the economy - to remove the nation towards the era beyond fossil fuels.

As species are exterminated by shifting climate zones, ecosystems can collapse, destroying more species.