Every Thursday, a new episode of Living Planet brings you environment stories from around the world, digging deeper into topics that touch our lives every day. The prize-winning, weekly half-hour radio magazine and podcast is produced by Deutsche Welle, Germany's international broadcaster - visit dw.com/environment for more.
We meet the pilot of the first solar-powered flight around the world, Norway faces an oil dilemma, and what's putting the world's most famous tourist sites at risk?