We will lead the world on climate change --
United States President Barack Obama on Monday vowed to lead the world on Climate Change as he set about shredding Bush administration global warming policies with new domestic measures designed to force the development of fuel-efficient cars, the Agence France Presse reported.
Climate change is by far the most important challenge that we face and it should be viewed in the context of the way we look at the global economy, says Al Gore, former Vice President of the US and environmental activist.