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Welcome to Earth - "Power of Scent"

On the trail of tiger sharks in the Pacific, Will explores the power of smell. For humans, the sense of smell triggers deep memories and emotions, but it has an even more vital function in the animal world. Will discovers that scents link ecosystems around the world and are so powerful for some animals that they can mean the difference between life and death.

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  • Coral reef. (National Geographic for Disney+)

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    Coral reef. (National Geographic for Disney+)

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  • Tiger Sharks and Turtles at Raine Island on the Great Barrier Reef. (National Geographic for Disney+)

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    Tiger Sharks and Turtles at Raine Island on the Great Barrier Reef. (National Geographic for Disney+)

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  • Blind Explorer Erik Weihenmayer at Le Blondeau Glacier, the start of his Alaskan rafting expedition. (National Geographic for Disney+/Oliver Richards)

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    Blind Explorer Erik Weihenmayer at Le Blondeau Glacier, the start of his Alaskan rafting expedition. (National Geographic for Disney+/Oliver Richards)

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  • Blind Explorer Erik Weihenmayer at Le Blondeau Glacier, the start of his Alaskan rafting expedition. (National Geographic for Disney+/Oliver Richards)

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    Blind Explorer Erik Weihenmayer at Le Blondeau Glacier, the start of his Alaskan rafting expedition. (National Geographic for Disney+/Oliver Richards)

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  • Blind Explorer Erik Weihenmayer at Le Blondeau Glacier, the start of his Alaskan rafting expedition. (National Geographic for Disney+/Oliver Richards)

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    Blind Explorer Erik Weihenmayer at Le Blondeau Glacier, the start of his Alaskan rafting expedition. (National Geographic for Disney+/Oliver Richards)

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  • Blind Explorer Erik Weihenmayer and his friend Harlan Taney after a successful descent of rapids on the Tsirku river. (National Geographic for Disney+/Oliver Richards)

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    Blind Explorer Erik Weihenmayer and his friend Harlan Taney after a successful descent of rapids on the Tsirku river. (National Geographic for Disney+/Oliver Richards)

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  • The Tsirku river as it enters the Alaskan rainforest. (National Geographic for Disney+/Oliver Richards)

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    The Tsirku river as it enters the Alaskan rainforest. (National Geographic for Disney+/Oliver Richards)

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  • The Tsirku river, where the St Elias mountains meet the Alaskan rainforest. (National Geographic for Disney+/Oliver Richards)

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    The Tsirku river, where the St Elias mountains meet the Alaskan rainforest. (National Geographic for Disney+/Oliver Richards)

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  • Will Smith behind the scenes of production for the Power of Scent episode for WELCOME TO EARTH. (National Geographic for Disney+/Kyle Christy)

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    Will Smith behind the scenes of production for the Power of Scent episode for WELCOME TO EARTH. (National Geographic for Disney+/Kyle Christy)

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  • Will Smith on a boat with Photographer Cristina Mittermeier as they investigate the power of smell. (National Geographic for Disney+/Kyle Christy)

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    Will Smith on a boat with Photographer Cristina Mittermeier as they investigate the power of smell. (National Geographic for Disney+/Kyle Christy)

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  • Conservation Photographer Cristina Mittermeier in Australia during production of WELCOME TO EARTH. (National Geographic for Disney+/Kyle Christy)

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    Conservation Photographer Cristina Mittermeier in Australia during production of WELCOME TO EARTH. (National Geographic for Disney+/Kyle Christy)

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  • Will Smith on a boat with Photographer Cristina Mittermeier as they investigate the power of smell. (National Geographic for Disney+/Kyle Christy)

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    Will Smith on a boat with Photographer Cristina Mittermeier as they investigate the power of smell. (National Geographic for Disney+/Kyle Christy)

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  • Conservation Photographer Cristina Mittermeier in Australia during production of WELCOME TO EARTH. (National Geographic for Disney+/Kyle Christy)

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    Conservation Photographer Cristina Mittermeier in Australia during production of WELCOME TO EARTH. (National Geographic for Disney+/Kyle Christy)

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