Michele W. Berger

Opening the Teach-in by breaking down barriers

The first full day of the Penn Teach-in engaged participants with expert panels on vaccine denial and firearm violence, an "evolutionary walk through time," and a dialogue on the production and dissemination of knowledge.

Katherine Unger Baillie, Michele W. Berger

Short-term effects of Daylight Saving Time

Assaults decrease by 3 percent the Monday after the switch to Daylight Saving Time in the spring, according to research from Penn criminologists.

Michele W. Berger

Cleaning up vacant lots makes neighborhoods safer

Removing trash and debris, grading land, planting new grass, and maintaining lots resulted in a 29 percent reduction in gun violence, 22 percent decrease in burglaries, and 30 percent drop in nuisances.

Michele W. Berger