The surfaces of Earth, Mars, and Titan, Saturn鈥檚 largest moon, have all been scoured by rivers. Yet despite this similarity and the amazingly Earth-like landscapes of Titan complete with valleys, lakes, and mountains, researchers led by City College of New York geologist Benjamin Black report new evidence that the origins of the topography there and on Mars are different from on Earth. In their paper 鈥淕lobal drainage patterns and the origins of topographic relief on Earth, Mars, and Titan,鈥 published in the latest issue of 鈥淪cience,鈥 the team identifies plate tectonics on Earth as one key
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