Stop to go! Philly trains to recycle brake energy
How to widen the hunt for targeted cancer therapy
Revolutionary museum swap: Valley Forge for Philly
Revolution museum settles on Philly after 11 years
Ikea to start phasing out incandescent light bulbs
Retin-A researcher Kligman dies in Pa. at 93
Retin-A researcher Albert Kligman dies
PHILADELPHIA — Dermatologist Albert M. Kligman, whose research led to discoveries including the acne and wrinkle drug Retin-A but whose pioneering work was overshadowed by his experiments involving prisoners, has died. He was 93.
US agency probes possible gender bias at colleges
PHILADELPHIA - An international team of environmental scientists led by the University of Pennsylvania has shown that sea-level rise along the Atlantic Coast of the United States was two millimeters faster in the 20th century than at any time in the past 4,000 years.