Issues

Computer tools and kinesthetic apparatus play key roles in a novel approach to introductory physics that takes into account both time‐honored ideas about learning and findings from recent educational research.

Clouds of frozen nitric acid particles that form in the polar winter stratosphere are a crucial element in the massive springtime ozone depletion over Antarctica.

Its goal is to give scientists ready access to space by using expendable vehicles to provide frequent and relatively inexpensive launches of highly focused scientific satellites.