Looks at the black market website known as the Silk Road, which emerged on the darknet in 2011. This 'Amazon of illegal drugs' was the brainchild of a mysterious, libertarian intellectual operating under the avatar The Dread Pirate Roberts. Promising its users complete anonymity and total freedom from government regulation or scrutiny, Silk Road became a million-dollar digital drugs cartel. Homeland Security, the DEA, the FBI and even the Secret Service mounted multiple investigations in the largest online manhunt the world had ever seen. But it would be a young tax inspector from the IRS, who had grown up in the projects of Brooklyn, who would finally crack the case and unmask 'DPR'.
To fly an early airplane required skill, courage and a sense of adventure. The advent of the movie camera meant that their exploits could be broadcast to every corner of the globe, and recorded for posterity. The pilots of Germany, France and Britain who were able to master combat flying in time to prevent an early death were known as "Air Aces".
More than 2,000 years ago, the thriving city of Petra rose up in the bone-dry desert of what is now Jordan. An oasis of culture and abundance, the city was built by wealthy merchants whose camel caravans transported incense and spices from the Arabian Gulf. They carved spectacular temple-tombs into its soaring cliffs, raised a monumental Great Temple at its heart, and devised an ingenious system that channeled water to vineyards, bathhouses, fountains, and pools.
To respond to global demand and population growth, energy production will have to increase by 75% between now and 2050. The fossil fuels (oil, coal and natural gas) that we use currently use on a massive scale are becoming increasingly rare and are highly polluting, wreaking havoc on the climate.
Dallas Campbell and Dr Hannah Fry examine the advanced technology needed to ensure the safety of the one million people estimated to be travelling by plane at any given time. They discover the daily routines of air traffic controllers in the busiest airspace in the world and pilots flying thousands of miles at night. Plus, transporting horses by planes and in-flight medical advice.