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Historian and Author

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Exploration and Engineering

Collapse of Western Civilization

Merchants of Doubt

Atmospheric Science at NASA

High Speed Dreams

Exploration and Science

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Scuba Videos

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Manta ray dive June 23, 2017

Sea Turtle diving

Manta Ray Diving

Manta ray diving

Manta Ray Diving

Manta Ray Diving

Manta ray diving

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