Exclusive: Echo chambers - Fake news fact-checks hobbled by low reach, study shows

BRUSSELS (Reuters) - The European Union has called on Facebook and other platforms to invest more in fact-checking, but a new study shows those efforts may rarely reach the communities worst affected by fake news.The analysis by big-data firm Alto Data Analytics over a three-month period ahead of this year's EU elections casts doubt on the effectiveness of fact-checking even though demand for it is growing.To access the Alto Data Analytics study, click..