Evaluating Sources

A product of the Annenberg Public Policy Center, this site is terrific for checking up on political claims.

The Pulitzer Prize-winning Politifact researches the claims of politicians and checks their accuracy.

One of the oldest debunking sites on the Internet, Snopes.com focuses on urban legends, news stories and memes. They also cite their sources at the end of each debunking.

While focused primarily on political facts, it covers specific claims in-depth and with plenty of cross-referencing.

Science Feedback is a not-for-profit organization verifying the credibility of influential claims and media coverage that claims to be scientific, starting with the topics of climate and health.