The 11th Hour (I) (2007)

Stephen Hawking: Self - Lucasian Professor of Mathematics, Cambridge University

Quotes 

• Stephen Hawking : One can see from space how the human race has changed the Earth. Nearly all of the available land has been cleared of forest and is now used for agriculture or urban development. The polar icecaps are shrinking and the desert areas are increasing. At night, the Earth is no longer dark, but large areas are lit up. All of this is evidence that human exploitation of the planet is reaching a critical limit. But human demands and expectations are ever-increasing. We cannot continue to pollute the atmosphere, poison the ocean and exhaust the land. There isn't any more available.

• Sen. James Inhofe : Could it be that man-made global warming is the greatest hoax ever perpetrated on the American people?

  Stephen Hawking : One of the most serious consequences of our actions is global warming brought about by rising levels of carbon dioxide from the burning of fossil fuels. The danger is that the temperature increase might become self-sustaining if it has not done so already.