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pkg dunnakey oceans of mars_00003808
pkg dunnakey oceans of mars_00003808

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    Lost oceans of Mars explained

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Lost oceans of Mars explained

CNN's Adam Dunnkaey looks at how the dusty Martian surface was once a vast ocean.

Lost oceans of Mars explained

CNN's Adam Dunnkaey looks at how the dusty Martian surface was once a vast ocean.