Professor Danielle George takes three great British inventions – the light bulb, the telephone and the motor – and shows you how to hack, adapt and transform them to do extraordinary things. This is tinkering for the 21st century.

Machu Picchu, the crown jewel of the sprawling Incan empire, is constant threatened by earthquakes, landslides, and torrential rain. Using CGI to strip it, layer by layer, we explore the infrastructure that keeps it from tumbling down the Andes mountains.