Future Farming: Pastures new for big data

Data is shaping almost every area of our lives. Agriculture has been slow to embrace new technology but even here it's beginning to have a big impact. There are now hundreds of companies offering everything from farm management and precision tools to bots and drones. Some tractors have computing power that would have turned Nasa's moon-landing mission green with envy. What started in farm equipment is moving into the field – at least in the developed world.