1. Golden Coast

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. 27 April 2018. 45 min

Titans clash along California's big coast where rugged highlands meet the deep ocean.

2. Rise of the Redwood Giants

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. 4 May 2018. 45 min

The Land of Giants, where the tallest trees in the world tower over the Californian coast.

3. Under the Volcano

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. 11 May 2018. 45 min

The High Cascades conceal the most active volcanoes in the Lower 48 that could erupt any time.

4. Glacier Land

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. 18 May 2018. 45 min

The perilous peaks of western Montana hide an ancient secret, America's glacier lands.

5. Shadow of the Rockies

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. 25 May 2018. 45 min

The amazing life around the Rockies, from low valley meadows to the peaks of its mountains.