Feature

Einstein’s Last Revision

Study Plant Growth in Weather Chambers

Test Hypervelocity Gun

Front Matter

[Photograph]: Science Talent Institute Scenes

Books of the Week

Two Hormones Help Some Cancer Patients

Farsightedness of Old Age Complete at 52

What’s Ahead in Automation

Change Security Rules

Nature Ramblings: The Ornery Crab

American POW’s Taught to Lie by Communists