Feature

Giant Valve Ends Rocket Vibrations

Arctic Cold 14,000 Years

Solar System Has Some Two Million Comets

[Photograph]: Streamlined Hull

Deep-Diving Sonar Built to Scan Ocean’s Floor

No Life or Hydrocarbons Likely on Planet Venus

Probe Planned on Changing the Weather

Winners Enter Science

New Math Formula for Insulating House Paint

In Science Fields

Saturn Now Prominent

New Ideas and Gadgets