Feature

New Machines and Gadgets

Front Matter

Beer-Proof Piano

World’s Dry Areas Can Learn from Each Other

Filter Tags Germs in Fifteen Hours

Chemical Aids Mental Ill

Legally Standard Bread Required by Aug. 13

[Photograph]: “Love” on a Lion

Sun Energy Changes

Brain Wave Patterns Spot Good Citizens in Convicts

Tell If Speaker Is Boring

Normal People Focus Energies on Main Problem