Feature

Turtle’s Tank-like Armor Not a Certain Defense

Fears of Petroleum Shortage Held Greatly Exaggerated

Cancer Treatment Advance Awaits Better Lead Compounds

Plants’ Fluorescent Light Clue to Photosynthesis

Serious Petroleum Shortage Predicted in near Future

Multiple Lightning Strokes Crush Strong Wires

Portable Power Saw Makes Pruning Easier

Stratosphere Glider Being Constructed in Russia

First Glances at New Books

Freedom and Organization Both Needed in Research

Mediterranean Fruit Fly Causes Rise of New Industry

Cycle of 23 Years Dominates Heat and Light of Sun