...chief executives of large fossil fuel companies to [should] be put on trial for high crimes against humanity and nature; [Hansen] accusing them of actively spreading doubt about global warming in the same way that tobacco companies blurred the links between smoking and cancer.

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

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

If we fail to act, we will end up with a different planet.

The five-year mean global temperature has been flat for the last decade

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

The greatest danger hanging over our children and grandchildren is initiation of changes that will be irreversible on any time scale that humans can imagine.