As the fifth anniversary of Hurricane Ida approaches later this summer, researchers across Penn show that flooding was not a statistical anomaly but the result of compounding forces—climate change, urbanization, and infrastructure—that are reshaping flood risk. By building a street-level model of the Schuylkill River, the team has identified a critical tipping point at which floods become uncontained, offering new insight into how urban rivers behave under extreme conditions.

New research finds newly hired leaders are more likely than their predecessors to improve motivation and organizational performance — but only if employees already believe change is needed. However, a change-oriented style is also more likely to backfire for a new leader than for their predecessor. That can happen if organization members are satisfied with the status quo under the previous leader.

A new study led by researchers at Trinity College Dublin in Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association, estimates the value-based prices of these medicines across 174 countries. The study shows that while disease-modifying therapies (DMTs) may offer substantially greater health benefits than usual care, their real-world impact will depend on whether they are priced in ways that health systems can afford.

In most U.S. zip codes, electric vehicles are cost-competitive with their gas-powered counterparts, according to a new study. And regarding emissions benefits of EVs, individual driving patterns matter as much as regional factors like the local electricity mix.