BBC Earth

Steve Backshall journeys the globe with some of the greatest travellers on the planet as he explores the reasons that drive their epic voyages and the challenges migrating whales face.

This time starting in Manaus, capital of the state of Amazonas, Robson's adventure kicks off with a truly astonishing natural phenomenon: the Meeting of Waters.

Michael Portillo's railway tour reaches its final stop - Singapore. Michael walks the streets of Chinatown with a local artist and uncovers the history of the Chinese community there.

Paddy McGuinness and Cherry Healey visit a factory producing half a million sausage rolls a day.

Having been fearful of hippos since a young boy, Steve sets out to discover why hippos are considered the most dangerous animals in Africa, and if their aggressive reputation is misunderstood.

Steve takes us into the dangerous world of crocodiles - one of nature's most fearsome predators - entering croc-infested territory escorted by an armed safari guide.

Paddy McGuinness and Cherry Healey visit a factory producing half a million sausage rolls a day.

Having been fearful of hippos since a young boy, Steve sets out to discover why hippos are considered the most dangerous animals in Africa, and if their aggressive reputation is misunderstood.

Michael Portillo's railway tour reaches its final stop - Singapore. Michael walks the streets of Chinatown with a local artist and uncovers the history of the Chinese community there.

In an unpredictable world our ancient powers must lay down the foundations of their societies to show their strength and protect their people. Who will build their way to glory?

Paddy McGuinness and Cherry Healey visit a factory producing half a million sausage rolls a day.

Having been fearful of hippos since a young boy, Steve sets out to discover why hippos are considered the most dangerous animals in Africa, and if their aggressive reputation is misunderstood.

In an unpredictable world our ancient powers must lay down the foundations of their societies to show their strength and protect their people. Who will build their way to glory?

This time starting in Manaus, capital of the state of Amazonas, Robson's adventure kicks off with a truly astonishing natural phenomenon: the Meeting of Waters.

Paddy McGuinness and Cherry Healey visit a factory producing half a million sausage rolls a day.

Michael Portillo's railway tour reaches its final stop - Singapore. Michael walks the streets of Chinatown with a local artist and uncovers the history of the Chinese community there.

In an unpredictable world our ancient powers must lay down the foundations of their societies to show their strength and protect their people. Who will build their way to glory?

This time starting in Manaus, capital of the state of Amazonas, Robson's adventure kicks off with a truly astonishing natural phenomenon: the Meeting of Waters.

In the planet's most densely populated continent, animals live at extremely close quarters with people, from tigers making a home in town to elephants stopping traffic for food.