Angel Abbud-Madrid, director of the Center for Space Resources at Colorado School of Mines, recently appeared on Science Friday to discuss the discovery of liquid water under the Martian surface. From the story: Researchers have been scouring Mars for water since the early 1970s. Since then, they’ve found frozen water in the poles of Mars as well as trace amounts locked up in Martian soil, but nothing liquid—until this past week. A team of scientists from Italy’s National Institute of Astrophysics announced in Science they found liquid water underneath the glaciers of the planet’s south pole ....