Visit extreme locales, including Mount Everest's Khumbu Icefall and its dangers to sherpas, the Grand Canyon, where conservationists try to ensure a condor chick's survival, and the slopes of Mount Kilimanjaro, where 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 man vs. bull; and ocean reefs, where a guardian seeks a manta ray to help save the species.