A look at one of the most exclusive holiday destinations in the world - Necker Island. This reveals how the rich take a holiday, and what it's like for the staff who serve them.
Geologist Prof Iain Stewart shows how the continent of Africa was formed from the wreckage of a long lost supercontinent. He discovers clues in its spectacular landmarks, mineral wealth and iconic wildlife, that help piece together the story of Africa's formation. But he also shows how this deep history has left its mark on the modern day Africa and the world.
As scientific studies confirm sea level changes throughout the globe, major coastal cities like Miami are now fighting back against these rising tides, before it's too late. Parts of Miami Beach are under serious threat, with major economic and social dangers looming large.
As spring lights up the land, Alaska faces one of the greatest transformations on earth. Temperatures soar, and as the sun's rays hit the snow and ice, water, light and warmth return. Alaska's transition to spring may look magical, but for those animals emerging from a long winter's sleep, it's a time of intense competition, as everything is in a rush to cash in on Alaska's riches.