Physicists design a new mirror to reflect light

Sniffing for telltale molecules, method analyzes tissue with every cut

Early-stage research could eventually lead to gene therapy

Reserves enable long journey from California to Hawaii and back

Fossils found in Utah reveal geographic segregation of horned species

Daily rhythms affect everything from the time we wake to how well we perform in sports

Some ocean life is finding a home in floating piles of plastic trash

Images from Hubble Space Telescope reveal tiny, dark satellite orbiting blue-green gas giant

Images from Hubble Space Telescope reveal tiny, dark satellite orbiting blue-green gas giant

Buckling of appendage drives tiny two-point turn

Method could help doctors treat children's fevers

Technique transports nonmagnetic particles such as cells, water droplets and coffee grounds

Fossils yield tooth in healed wound of another dinosaur

Both toenails and toe tips grew back in mice, thanks to special 'stem' cells living beneath the nails

Plants continue their biological routines even after being picked

A new type of fiber-optic cable packs hefty data into a small space

Bacteria that live in the gut may help define species

Previously thought to grow at a slow pace, the sea creatures exploded in number

Distant powerful temblors triggered ominous activity at wastewater injection sites

Orca genetics highlights distinctions among groups