Do believe that if we fail to act in time, it will be the single biggest regret any of us has at the end of our lives.

The last time Earth was 1°C warmer than today, sea levels were 20 feet higher.

Hurricane seasons with four or more super-hurricanes, those with sustained wind speeds of 131 mph or more will soon become the norm.

We created a way of raising standards of living that we can't possibly pass on to our children.

The great political tragedy of our time is that conservative leaders in America have chosen to use their superior messaging and political skills to thwart serious action on global warming.

On our current path, all our great Gulf and Atlantic coast cities are at risk of meeting the same fate as New Orleans.

The world beyond 450 ppm atmospheric concentrations of carbon dioxide, the world that crosses carbon cycle tipping points that quickly take us to 1000 ppm, is a world not merely of endless regional resource wars around the globe. It is a world with dozens of Darfurs. It is a world of a hundred Katrinas, of countless environmental refugees