Thomas Morton takes a look at an emerging push to implant electronic devices inside the human body, hardwire them to our brains, and allow us to not only overcome disadvantages or injury, but open up entirely new avenues of human experience. Ben Anderson visits Rio in the aftermath of the 2014 World Cup and 2016 Olympics to find Brazil in a financial crisis, its government consumed with a monumental corruption scandal and violence is rising again as drug trafficking gangs fight for control.