PROVIDENCE, R.I. [Brown University] — For decades, scientists have theorized ? romanticized, even ? that Mars has harbored water. The evidence has grown stronger as recent missions to the Red Planet have revealed in stunning detail Martian topography, mineralogy and clues to past climate. But how much water, where it was or is located and what it was doing have been hard to pin down.
"We've seen all this evidence of water on Mars," said John Mustard, a Brown professor of planetary geology, "but did it do any work?"