Newly discovered layers of ice buried a mile beneath Mars’ north pole are the remnants of ancient polar ice sheets and could be one of the largest water reservoirs on the planet. If melted, the newly discovered ice would be equivalent to a global layer of water at least 1.5 meters (5 feet) deep.

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Newly discovered layers of ice buried a mile beneath Mars’ north pole are the remnants of ancient polar ice sheets and could be one of the largest water reservoirs on the planet. If melted, the newly discovered ice would be equivalent to a global layer of water at least 1.5 meters (5 feet) deep.