The world's longest river flows from the heart of Africa into the Mediterranean Sea. What feeds this inexhaustible river to make its waters so fertile?

Madagascar is truly a weird and wonderful land. Isolated on an island of extreme and magical looking locations, life has adapted and diversified. With few predators, numbers have proliferated and natural selection has gone mad.

Reaching high into the sky at Africa's equator, Mount Kenya stretches up into the troposphere. How does life survive on these harsh slopes?

Stretching 1,500 miles from the frigid waters of Cape Point to the sub-tropical seas of Kwazulu- Natal, Africa's Cape Coast is where irresistible force meet immoveable object.

A wilderness of extremes. How do these uniquely diverse, ancient people coexist alongside wildlife found nowhere else in the world?

Stretching for millions of miles, the world's largest desert receives little rainfall and temperatures fluctuate wildly. How do people and animals flourish?

Stretching for thousands of square kilometres, the world's largest salt lake receives little rainfall and temperatures fluctuate wildly. How can life flourish in this environment?

In a wilderness of extremes, how do the diverse and ancient people of Ethiopia coexist alongside wildlife found nowhere else in the world?