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Health & MedicineDefect Detector: Plugging holes in a breast cancer–gene screen
A genetic test not available in the United States catches many potentially cancer-causing BRCA-gene mutations not detected by the sole U.S. test.
By Nathan Seppa -
PlantsReality Botany: Data ease doubts about plant species
Despite the doubts of some botanists, plant species aren't just some arbitrary human classification scheme, says a team of evolutionary biologists.
By Susan Milius -
Mood Meds’ Second Wind: Depression drugs aided by extra treatment step
A second, modified course of drug treatment fosters recovery in a substantial minority of depressed adults who don't feel better after treatment with a commonly prescribed antidepressant.
By Bruce Bower -
EarthTiny Bubbles: Oldest evidence yet for methane makers
Analyses of the gases dissolved in water trapped in ancient minerals suggest that methane-generating microbes have been around almost 3.5