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Why fake news spreads like wildfire on Facebook

Why fake news spreads like wildfire on Facebook

How can we fight back against the fake news infecting our information feeds and political systems? New research suggests that education and filtering technology might not be enough: The very nature of social media networks could be making us peculiarly vulnerable.

The intentional spreading of false stories has been credited with swaying such monumental events as last year's Brexit vote in Britain and the U.S. presidential election. Tech firms such as Alphabet Inc. unit Google and Facebook Inc. have been trying to find ways to weed it out, or at least help users spot it. Some say we need to start earlier, educating children on how to think critically.

But understanding the...