1. Montana: Saving the Last Best Place

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. 21 April 2022. 60 min

The pristine land of President Lincoln's favorite state is under threat like never before as developers, conservationists and cowboys battle for territory.

2. Greenland: Breaking the Ice

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. 21 April 2022. 60 min

Global warming is dramatically altering the landscape — and the prospects — of the world's largest island.

3. Charleston: History and the Rising Tide

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. 21 April 2022. 60 min

As surging seas and frequent floods batter America's most historic city, the fight is on to save beautiful Charleston and its storied past.

4. Hawaii: Protecting Paradise

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. 21 April 2022. 60 min

The global shutdown gave Hawaii's fragile islands a chance to recover from the effects of surging tourism. Can a new balance be struck to protect the island?