Live from Abu Dhabi Connect the World takes you on a journey across continents, investigating the stories that are changing our world.
Amazing engineering feats have made it possible to travel from London to Beijing by train alone thanks to the first intercontinental train tunnel, the Marmaray, in Turkey.
Becky speaks with the Director of Arup Bill Gross about the challenges of building underground tunnels such as the Marmaray.
Turkey has long been referred to as the bridge between Europe and Asia.
As the country opens a new underwater railway tunnel that connects the two continents it looks as though it may actually become one.
CNN's John Defterios has the story of Turkey's ambitious Marmaray project.