Feature

New Cancer-Causing Chemicals Are Unique in Structure

New Discovery Widens Field of Necessary Research

Scattering X-Rays Tell of Dust Danger

Drought Returns to West, Intensified by Heat

[Photograph]: One Porcupine: In Tin

Freedom and Organization Both Needed in Research

Stratosphere Glider Being Constructed in Russia

Taming Ol’ Man Ribber

In Science Fields

American Industries Move to Middle-Sized Cities

Parasite Fungus of Pines Itself Victim of Parasite

[Photograph]: An Enchanted World Afloat