Feature

Insecticides and Crops

[Photograph]: Mercury during Transit

Girls Are Birthmarked Twice as Often as Boys

Airport Noise Complaints

“Economy” Seen Reason for Weather Ship Cuts

Sea Water Freshening

New Anti-Ameba Drug

2,000-Year-Old Cisterns Help Reclaim Desert

Scientists Develop New Berry Plant

Front Matter

Polio Virus Particles

[Photograph]: World’s Speed Record