Take a look at the websites that fact-check news stories:
Washington Post's Fact Checker
Univision’ s Detector de Mentiras (Lie Detector)
AP Fact Check
NPR Politics Fact Check
Duke Reporters' Lab Global Fact-Checking Sites
SciCheck FactCheck.org’s SciCheck feature focuses exclusively on false and misleading scientific claims that are made by partisans to influence public policy.
FlackCheck political literacy companion site to the award-winning FactCheck.org. The site provides resources designed to help viewers recognize flaws in arguments in general and political ads in particular. Video resources point out deception and incivility in political rhetoric.