Feature

Front Matter

Plastics from Waste

Controls on Home Furnaces Improved by New Devices

Penicillin Saves Babies

Sinus Notion Debunked

Amateurs May Find Comet by Searching Crater and Leo

[Photograph]: For Guiding Surgeon’s Fingers

Better Brain Wave Record

Mental Health Plan

Turkey’s Earthquake in Same Region as Before

Double Star Is Composed of Two White Dwarfs

Drafts Do Cause Colds