Feature

Teen-Age Pregnancy

New Ideas and Gadgets

Lichens Found Growing on Galapagos Tortoises

Front Matter

Automated Commuting

Students Survey Changes in Smoking Habits

[Photograph]: Perfect Synthetic Crystals

International Cooperation Year

Flip-Flops on the Moon: The Only Way to Travel

How to Spur Ambition

[Photograph]: Space Simulator

[Photograph]: To Test Persistence