PolitiFact: For the second time in a week on national TV, Democratic presidential candidate Bernie Sanders attacked Republican candidate Donald Trump by citing Trumps views on climate change. Trump "thinks that climate change is a hoax, invented by the Chinese," Sanders said Jan. 24 on NBCs Meet the Press, echoing a similar statement he made in the Democratic presidential debate in Charleston, S.C. (Watch the clip.) Did Trump really say that? He definitely tweeted that view once in 2012, though he has since...