Many assume that because young people are fluent in social media they are equally savvy about what they find there. Our work shows the opposite.

"Many people assume that because young people are fluent in social media they are equally perceptive about what they find there," said Professor Sam Wineburg, the lead author of the report and founder of SHEG. "Our work shows the opposite to be true."

The fake news we should be worried about is not stories invented by Macedonian teenagers about Hillary Clinton selling arms to Islamic State, but the constant feed of confected scares about unions, tax and regulation drummed up by groups that won’t reveal their interests.