Visit extreme locales, including Mount Everest's Khumbu Icefall and the dangers it presents to Sherpas; the Grand Canyon, where conservationists try to ensure a condor chick's survival; and the slopes of Mount Kilimanjaro, there farmers battle with elephants.

See wonders created by the grand and unpredictable power of water, including Victoria Falls, where men risk death to reach fishing pools; the Camargue, where it's man versus bull; and ocean reefs, where a guardian seeks a manta ray to help save the species.

Witness wonders created by the force that makes our planet unique - life itself. In the Amazon, boys face fierce animals in a rite of passage and a Bangladeshi father and son brave killer bees and man-eating tigers to find honey.