Yes social media is now a days filled with the fake news,so people should cultivate the habit of critical thinking in  each and every aspect of life.With the critical thinking one must analyze on own and also must try to find a genuine answer or truth and later decide.The one suggestion to curb fake news is by using blockchain.Blockchain can store all historical data and it should be added only if it reaches consensus and the news is truth.So by this in future if their is a fake news regarding the same subject we can check back in blockchain to check if it's legit and no one can tamper the past news which is legit.