Why has there been a disturbing rise in internet pranks that simulate real life attacks? In an exclusive interview, we hear from YouTuber Arya Mosallah, who had his channel terminated after some of his videos - which some thought resembled acid attacks - were removed from the site. And we look at the ethics and morals of the people making videos in the pranking genre. There’s a stereotype of Russia as a nation of vodka-swilling hard drinkers – but is that idea out of date? The Russian health minister told a conference recently that the country’s alcohol consumption there has dropped by 80% in just five years. Can that be true? Pain comes to us all at some point in our lives, but a person’s pain is a unique experience and describing what hurts is not a simple task. Sandra Kanthal asks why we need to understand more about pain and reports on new ways being developed to measure and manage it. (image: People stand next to a shelf with strong drinks in a food store in Moscow. Credit Andrey Smirnov/Getty Images)