Feature

New Machines and Gadgets

Farming Becomes Business

Fall Is School Science Time

Front Matter

Auto Exhaust Smog May Be Cut by Mixing Device

Eating while Drinking Reduces Pancreatitis

Killing Back Yard Wasps Is a Tricky Business

In Science Fields

[Photograph]: Hypersonic Wind Tunnel

Protect U. S. from Malaria

Youngsters See Moon Smaller as It Rises

Iron Supplies Seen Ample for Immediate Future