Two Scientists Elected to the National Academy of Sciences

Marsha Lester, Edmund J. Kahn Distinguished Professor of Chemistry, and Andrea Liu, Hepburn Professor of Physics, have been elected to the National Academy of Sciences, considered one of the highest honors accorded a U.S. scientist or engineer.

Selected for "their distinguished and continuing achievements in original research," the scientists are part of the 2016 Academy class of 84 members and 21 foreign associates from 14 countries.

Lester studies atmospheric chemistry, including a class of short-lived molecules known as “Criegee intermediates.” These molecules are a key step in several atmospheric processes, including the production of other molecules responsible for neutralizing pollutants.

Liu studies theoretical problems in soft and living matter physics, using theoretical and computational approaches. She is best known for her work on jamming, a new way of thinking about the development of rigidity in solids.

Arts & Sciences News

Michael C. Horowitz Awarded Department of Defense Grant to Lead Team on Study of Autonomous Systems and AI

Michael C. Horowitz, Professor of Political Science, will oversee the study of autonomous systems and artificial intelligence.

View Article >
Earthquakes at the Nanoscale

In collaboration with Robert Carpick and David Goldsby, Tian, who graduated from Penn in 2017 with a doctorate in physics, recently published a paper in Physical Review Letters which attempts to tackle these devastating natural phenomena by investigating the laws of friction at the smallest possible scale, the nanoscale.

View Article >
Doris Wagner Named Robert I. Williams Term Professor

A leader in the fields of plant biology, chromatin modification, and epigenetics, Wagner’s research focuses on understanding at the molecular level the complex changes that occur when an organism switches developmental programs.

View Article >
Wrongful Convictions Reported for 6 Percent of Crimes

A study from Penn criminologists results in the first general estimate for the prison population as a whole.

View Article >
Race Has a Place in Human Genetics Research, Philosopher Argues

Penn philosopher Quayshawn Spencer says there is a racial classification that’s medically useful to reliably sample human genetic diversity.

View Article >
Exploring the Sounds of the Middle Ages

Assistant Professor of Music Mary Channen Caldwell's freshman seminar course, “Hearing (in) the Middle Ages,” explores a range of sounds heard throughout the medieval period, whether produced by people, instruments, bells, or animals.

View Article >