NEW YORK -- From Christopher Columbus to Marco Polo, human explorers throughout history have traveled far distances. But some of the world's greatest explorers are in the animal kingdom. NatGeo's new ...
Perched in a man-made canopy 120 feet above the Congo Basin, 30-year-old explorer Bertie Gregory films a parade of forest elephants. The mammals are notoriously wary of humans, so Gregory took to the ...