England might be out of the World Cup this week, but thousands of fans are still cheering their teams on across Brazil. But how does chanting change the behaviour of a football crowd? Why do free kicks and penalties still come down to good old physics? And how can economists use data from the pitch to see whether discrimination still exists in the beatuiful game? Plus, in the news, why scientists have blown up a mountain in Chile, why you could get addicted to sunshine, and are electronic cigarettes safe?