3/3. A look at some of earth's greatest spectacles. How a yearly flood creates the lush wetland of the Okavango Delta in the middle of the vast Kalahari Desert. Also in HD. [S,AD]
2/3. A look at some of earth's greatest spectacles. Svalbard spends much of each year in complete darkness but when the sun reappears, the landscape turns into a rich tundra. Also in HD. [S,AD]
1/3. A look at some of earth's greatest spectacles. New England is the stage for an incredible colour change when the greens of summer give way to the golds of autumn. Also in HD. [S,AD]
2/3. A look at some of earth's greatest spectacles. Svalbard spends much of each year in complete darkness but when the sun reappears, the landscape turns into a rich tundra. [S,AD]
1/3. A look at some of earth's greatest spectacles. New England is the stage for an incredible colour change when the greens of summer give way to the golds of autumn. [S,AD]