
In this photo provided by EPFL, former US Vice President Al Gore, right, is welcomed by Patrick Aebischer, president of the Swiss Federal Institute of Technology Lausanne, prior to receiving an Honorary Doctor degree for his commitment to increase public awareness about global warming and climate change from the Swiss Federal Institute of Technology in Lausanne, Switzerland, Tuesday, April 15, 2008.

In this photo provided by EPFL, former US Vice President Al Gore, left, poses with Swiss Federal President Pascal Couchepin, center, and Patrick Aebischer, president of the Swiss Federal Institute of Technology Lausanne, right, prior to receiving an Honorary Doctor degree for his commitment to increase public awareness about global warming and climate change from the Swiss Federal Institute of Technology in Lausanne, Switzerland, Tuesday, April 15, 2008.

In this photo provided by the EPFL, former US vice president Al Gore delivers his speech at the EPFL, Ecole polytechnic federale de Lausanne, Switzerland on Tuesday, April 15, 2008. Gore received an Honorary Doctor degree for his commitment to increase public awareness about global warming and climate change from the Swiss Federal Institute of Technology.