Dennis Kucinich outlines his vision for America
Hillary argues that our approach to the environment is a moral test
Bill Richards argues that his state implements the kyoto protocol
Hillary outlines her views on alternative energy
John Edwards participates in a programme to promote energy efficiency
Mitt Romney says:'we cannot allow our future to be determined by an oil cartel'
McCain believes that global warming is 'a real and present danger'
John Edwards proposes solutions to energy insecurity