PHILADELPHIA— Being the top dog — or, in this case, the top gelada monkey — is even better if the alpha male is willing to concede at times to subordinates, according to a study by researchers from the University of Pennsylvania, the University of Michigan and Duke University.

Evan Lerner ・July 3, 2012

Most visitors to the Caribbean hope that their stay won’t coincide with a major tropical storm. Hyejung Lee hoped for exactly the opposite.

Katherine Unger Baillie ・July 2, 2012

PHILADELPHIA — Researchers are hopeful that new advances in tissue engineering and regenerative medicine could one day make a replacement liver from a patient’s own cells, or animal muscle tissue that could be cut into steaks without ever being inside a cow.

Evan Lerner ・July 1, 2012

PHILADELPHIA -- Researchers have long been interested in discovering the ways that human brains represent thoughts through a complex interplay of electrical signals.  Recent improvements in brain recording and statistical methods have given researchers unprecedented insight into the physical processes underlying thoughts.  For example, researchers have begun to show that it is possib

Evan Lerner ・June 26, 2012

Gently placing the stethoscope against the golden retriever’s furry rib cage, a woman listens intently through the earpiece. “Lungs auscult clear,” she declares — veterinarian-speak for a healthy-sounding respiratory system.

Katherine Unger Baillie ・June 25, 2012

PHILADELPHIA — For their outstanding research achievements, Denis Kinane and George Hajishengallis of the University of Pennsylvania

Katherine Unger Baillie ・June 21, 2012

PHILADELPHIA — The journal Science is today publishing a paper revealing that highly pathogenic H5N1 influenza, also known as bird flu, can pass from one ferret to another through the air.

Katherine Unger Baillie ・June 21, 2012

PHILADELPHIA -- Memory devices for computers require a large collection of components that can switch between two states, which represent the 1’s and 0’s of binary language. Engineers hope to make next-generation chips with materials that distinguish between these states by physically rearranging their atoms into different phases.

Evan Lerner ・June 21, 2012

PHILADELPHIA — The first unequivocal evidence that humans in prehistoric Saharan Africa used cattle for their milk nearly 7,000 years ago is described in research by an international team of scientists, led by researchers from the University of Bristol in the United Kingdom and including Kathleen Ryan of the University of P

Katherine Unger Baillie, Hannah Johnson ・June 20, 2012

PHILADELPHIA — By pairing an intimate knowledge of immune-system function with a deep understanding of statistical physics, a cross-disciplinary team at the University of Pennsylvania has arrived at a surprising finding: T cells use a movement strategy to track down parasites that is similar to strategies that predators such as monkeys, sharks and blue-fin tu

Katherine Unger Baillie ・June 14, 2012