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Chemistry

Sweet tooth is in the genes

Taste researchers have narrowed the search for the sweet tooth gene, at least in mice, to a 100-gene region.

Physics

Four ions mingle in quantum chorus

A new way to produce mysterious quantum correlations among particles ups the record to four particles linked, or entangled, and opens the door to correlating many more particles on cue, a prerequisite for making quantum computers.

Physics

Prize honors physicist with conscience

Physicist-author Freeman J. Dyson received the Templeton prize for originality in advancing religious understanding.

Health & Medicine

The New GI Tracts

For preventing heart disease, diets that control insulin are all the buzz.

Planetary Science

A Comet’s Long Tail Tickles Ulysses

Stretching more than half a billion kilometers, the ion tail that Comet Hyakutake flaunted when it passed near the sun in 1996 is the longest ever recorded and suggests that otherwise invisible comets could be detected by searching for their tails.

Health & Medicine

Tests may better detect prostate cancer

Two novel tests for prostate cancer may help physicians catch this disease earlier and with far fewer false alarms.

Earth

Gasoline additive’s going, but far from gone

As the federal government proposes phasing out the gasoline additive MTBE, scientists explore ways to remove this potential carcinogen from drinking-water supplies that it has tainted throughout the nation.

Tech

Microdevice weds electronics, light fibers

By altering the chemical structures of dyelike molecules called chromophores, researchers have created tiny, low-voltage devices for converting electronic signals into light waves.