News
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Health & MedicineUrine test may improve prostate screening
Levels of two biomarkers might clarify whether a man with an iffy PSA score needs to get a biopsy, a study finds.
By Nathan Seppa -
Materials ScienceNow, an invisibility cloak you can see
Physicists have developed a device that can hide objects in visible wavelengths.
By Devin Powell -
LifeA cougar in Connecticut
Using DNA and trailside cameras, wildlife biologists retrace the 18-month, 2,000-mile journey of a young male cat.
By Nadia Drake -
LifeWasp has built-in Facebook
An insect species with a tricky social life has a special facility for telling one bug's mug from another.