Feature

Underwater Murkiness Removed by Filtering

Pint-Sized Radar Serves Small Boats

[Photograph]: Moving Day for Fish

Sewage-Grown Algae

New Insecticide Can Get into Cow’s Milk

False Teeth Should Look Natural, Not Perfect

Front Matter

Toothbrush Wins Out

[Photograph]: Silence Made-to-Order

Use Anesthetic for First Cavity Filling

Dentists Drill Fast to Hurt Patient Less

Smoother Airplane Rides