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Aging
Will research into “longevity genes” help us live longer and healthier lives?
NOVA scienceNOW

Obesity
Examine the biology behind the compulsion to eat.
NOVA scienceNOW

E-Paper, In Living Color
Materials advances could bring color, video, and flexibility.

News: BioChips Offer Animal-Friendlier Drug-Testing Technology
The journey of a drug from lab to pharmacy is usually long and pricey, typically taking a decade or more and gobbling up hundreds of millions of dollars. Pharmaceutical and chemical companies are willing to make these major investments in time and money on chemical compounds that promise to become the next Viagra, Prozac or other blockbuster medication. Often, however, these experiments are scuttled late in the game because toxic side effects surface.

T-Rays from Superconductors
A device from Argonne National Lab takes a fresh approach to generating t-rays.

A Better Resonator
Researchers have made defect-free gallium-nitride nanowires that could replace bulky quartz crystals in cell-phone receivers.

Physics update

News notes
US nuclear power; Elite universities

Geodetic laser scanning
Producing surface maps at submeter resolution, even over heavily forested terrain, GLS can reveal the fine structure of such features as faults, landslides, and drainage patterns

Hit or Miss
Why can’t scientists tell us for sure whether the stadium-sized asteroid Apophis will hit Earth? In this riff on the nature of scientific uncertainty, Neil deGrasse Tyson explains.
NOVA scienceNOW