2014 is the Year of Code, with the UK even becoming the first major economy to introduce computer programming to the school timetable. This week we investigate why coding, and getting kids into computer science has become so important. Plus, in the news, why the estimated number of smells a human can detect has gone from 10,000 to a trillion, the astronomers who have detected primordial gravitational waves, and a new supercomputer, in Scotland...