How tsunamis are formed and are detected

From escaped cannibal convicts and bushrangers of early settlement through to modern day tuna cowboys, Australians have long chosen to venture out and take the road less travelled.

Albert Lin travels to Micronesia, in the heart of the Pacific Ocean, to explore the tombs and ritual sites of the ancient island city Nan Madol.

David Attenborough looks at the unique and constantly changing landscape of East Africa. To survive here, creatures must be able to deal with unpredictable twists and turns wet turning to dry, famine to feast, cold to hot no matter how hostile and unpredictable it becomes. From dense forests, to snow capped peaks, steamy swamps to endless savannah, this unique and varied land is also a haven for life it supports a higher density of large mammals than anywhere else on Earth. But away from the forever-travelling herds, there are a huge cast of other characters lizards that steal flies from the faces of lions, vast dinosaur-like birds who stalk catfish through huge wetlands, and elephants who battle for three days for the right to father the next generation. East Africa can be a cruel and unforgiving place, when the stakes are high you must be prepared to take risks and if necessary to gamble with your life.