The global environment crisis is, as we say in Tennessee, real as rain, and I cannot stand the thought of leaving my children with a degraded earth and a diminished future.

Population growth is straining the Earth's resources to the breaking point, and educating girls is the single most important factor in stabilizing that. That, plus helping women gain political and economic power and safeguarding their reproductive rights.

When energy prices go up, the difficulty of projecting demand also goes up - uncertainty goes up.

Atheists have just as much of a right to the public discourse as any ... people of any religious faith in this country.

There's no such thing as clean coal. It's non-existent. Theoretically, it might be possible, many years from now, to come up with a way to clean it as it's burnt. But there's not a single demonstration project in the United States. [...] Clean coal doesn't exist.

We know that he has stored secret supplies of biological and chemical weapons throughout his country.

The science linking the increased frequency and severity of extreme weather to the climate crisis has matured tremendously in the last couple of years.