Martian Water Quest Hits High Gear Voice of America

Mars is under more intense scientific scrutiny than ever. The curiosity is about whether Earth’s cold, barren neighbor was ever wet enough to support simple microbial life. Scientists speculate that liquid water once flowed there because U.S. satellites in recent years have observed channels and other land forms that appear to have been carved by water. Now, two U.S. robot rovers are on the Martian landscape to seek proof of this.