Electric cars: Governments, auto makers look to green future
As environmentalists call for more action on climate change, we look at which countries and companies are making it easier to buy electric cars. Also on the programme: a year after hitting record highs, the value of bitcoin has plummeted around 75 percent. Kate Moody asks industry insider Brian O'Hagan why and what comes next. Plus, we bring you a report about saffron in Iran. It's the most expensive spice in the world, yet Iranian producers aren't cashing in.