Some of the nation's best-loved presenters - Clare Balding, Denise Lewis, Anita Rani, Dan Snow and Reggie Yates - travel around the globe to marvel at seven diverse natural wonders and meet some of the two billion members of the Commonwealth. They venture to the oldest desert on the planet, the most pristine rainforest, the world's greatest waterfall, the largest mangrove swamp, the richest coral reef and the world's most... see more