Climate change: Trump says

Donald Trump said Monday "not to believe" the conclusions of a major US government report warning of the negative consequences of climate change on the economy.
"I do not believe it," said the climate-skeptical president about the "evaluation" commissioned by the US Congress and written by more than 300 scientists.
According to this document released Friday, the United States could lose "hundreds of billions of dollars" by the end of the century because of greenhouse gases.