Feature

Summer in the Sky

Cosmic Ray Particles Mostly Die on Trip to Earth

Cold Walls Get Dirty Faster than Warm Ones

Program for National Defense on Health Front Presented

Hitler’s Success Attributed to Personality Factors

Steel Welding Process Produces Fireworks

X-Ray Spray Gives Better Treatment for Leukemia

Erratum: In Science Fields: Salmon Taken for a Ride to Get Around a Dam

Front Matter

Superheavy Element 94 Discovered in New Research

[Photograph]: Biggest Dinosaur Footprint

Dancing Light Beam Gives More Faithful Sound