Feature

All-Glass Paper Is Effective Air Filter

Peppers and Oils Blamed for Tourists’ Sickness

New Machines and Gadgets

Oak Wilt Hits 7 New States

In Science Fields

[Photograph]: Passaic River Bridge

Yellowstone Geyser Erupts after 60 Years

Books of the Week

Wild Figs Are Sought on Mexican Expedition

Air Defense Plans

Sulfur Shortage Continues

Nature Ramblings: Don’t Shoot