Koalas in Crisis

Ade Adepitan looks at some of the innovations that may get us travelling again in the near future. The team's on Australia's Kangaroo Island, twelve months on from the catastrophic bushfires that killed of thousands of koalas. In Guatemala, scientists are using laser imaging to reveal more about the Mayan civilisation, and Rajan Datar visits the crumbling Italian hilltop village that's battling to stop erosion carrying away its heritage.