Feature

Captive Opossums Bred

Tar in Air May Cause Cancer

Pain-Killing Drugs Tested under New Research Fund

Tiny Planes without Pilots Are Targets

Physics Becomes Lopsided

[Photograph]: Pliability Plus

[Photograph]: Transparent Research

New Machines and Gadgets

Smog Control Advantages

Electronics May Tell If Eggs Fertile

Cortisone Cure Lasting

A Better World or No World