Squirrels, bees could get US aid but not Yellowstone's bison

U.S. wildlife officials rejected petitions Thursday to protect Yellowstone National Park's storied bison herds but pledged to consider protections for two other species—a tiny, endangered squirrel in Arizona and bees that ...

A molecular 'atlas' of animal development

In a paper in Science this week, Penn researchers report the first detailed molecular characterization of how every cell changes during animal embryonic development. The work, led by the laboratories of Perelman School of ...

Team shows atoms can receive common communications signals

Researchers at the National Institute of Standards and Technology (NIST) have demonstrated a new type of sensor that uses atoms to receive commonly used communications signals. This atom-based receiver has the potential to ...

page 1 from 11