On the Cover: <i>Viking</i> Orbiter images suggest that rivers may have once flowed on Mars. Erosive features such as scour marks and teardrop-shaped islands, seen in this section of the Kasei Vallis channel, indicate sculpting by liquid water. The impact crater at the bend of the channel is 25 km across.
4 The Ancient Rivers of Mars: David Pieri takes us on a tour of the signs of ancient rivers flowing across the surface of Mars in Viking Orbiter images.
12 News & Reviews Volcanic eruptions; astronomy and creationism.
13 Washington Watch Effects of the 1982 election on the space committees in Congress.
14 Society Notes The Planetary Society goes international.