TNRTB Classic: Water and Plate Tectonics

A growing body of evidence indicates that Venus, Mars, and Earth all started with a large quantity of water. The surfaces of both Earth and Mars show extensive evidence of liquid water although the evidence on Mars dates back to well over 3 billion years ago. Plate tectonics seems to play a symbiotic role with a planet’s liquid water. If one disappears, so does the other. In the solar system, Earth is uniquely suited for vibrant, long-standing plate tectonics and abundant liquid oceans. Check out this previous TNRTB post to see why this life-essential plate-tectonics/large-ocean combination is rare.



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