Feature

Front Matter

Poor Military Aircraft Must Be Avoided through Research

Transparent Plastic Used to Preserve Insects

Research of Polio Takes New Angle; Virus Strains Differ

Hunt in New Guinea for Foe of Sugar Cane Insect Pest

Oceans Half Billion Years Old, Their Salt Tells Scientists

Synthesizing Carbohydrates Will Not Cause Revolution

Northwest Coast Once Worried Map-Makers

Ice Floe Rotation Prevents Magnetic Variation Measures

Typewriter Ribbon Inked on Only One Side Invented

Gasoline-Fueled Motors May Be Banned from Airplanes

Powerful Microscope Makes Very Tiny Objects Visible