
Forbidden Light
Researchers design band-gap structures for photons
Philip Yam is the managing editor of ScientificAmerican.com, responsible for the overall news content online. He began working at the magazine in 1989, first as a copyeditor and then as a features editor specializing in physics. He is the author of The Pathological Protein: Mad Cow, Chronic Wasting and Other Prion Diseases.

Forbidden Light
Researchers design band-gap structures for photons

Reflecting Differences
Health care begins to address needs of women and minorities

Bonus Game
A microchip that plays pinball with electrons

Atomic Turn-on
Researchers demonstrate the first atom switch

Spin Cycle
Rotating nuclei share a few moments of inertia

Sol's Plumage
The eclipse provided a close look at the corona

AIDS Education May Breed Intolerance

Has AIDS Peaked?
Questions persist in modeling the deadly, atypical infection

Math Exorcise
A new algorithm lifts the curse of dimensionality

There's the Rub
Nanotribology reveals the atomic nature of friction

Freezing Point
When do atomic clusters behave like bulk materials?

Into the Lattice
Individual molecules reveal the dynamics inside a crystal

Grim Expectations
Life expectancy of blacks is sliding

Short-Order Cook
A stellar cannibal yields insights to pulsar evolution

Acacia Trees Kill Antelope in the Transvaal

Terrorist Shrimp Kidnaps for Defense

Stardust Memories
Carbon dust grains reveal clues to stellar chemistry