From a twin train derailment in Madhya Pradesh leaves 31 dead to Chimpanzees spot themselves in the mirror for the first time, here is the round up of this week's most watched videos.
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Watch: Twin train derailments in Madhya Pradesh leaves 31 dead
Watch: Pak militant Usman Khan caught alive in Jammu’s Udhampur attack
Watch: Chimpanzees spot themselves in the mirror for the first time
Watch: Windows 10 email scam will allow hackers to take over your PC