Ancestral villagers along the Japanese coast left stones for future generations, marking how high the water rose during a historic tsunami. Last March 11, Japan’s northeast coast suffered another epic tsunami and earthquake. Enterprises around the world felt the shocks across their global supply chains. Many chains snapped. Inside, you’ll find an article that explores the lessons learned about supply chain management from the event. A high-water mark for future readers? Perhaps. But at least an informative read in the present.

In the issue, we also talk to two leaders among Wharton’s alumni network. Joshua Harris, W’86, led a team of investors and bought the NBA’s Philadelphia 76ers. Michael Nutter, W’79, won a second term as Philadelphia mayor this past November. We sat down with him to ask how he plans to leave a positive legacy and deliver on his lofty public-policy promises.

If you’re interested in public policy, I know you’ll enjoy our analysis of government intervention in the energy industry. I think you’ll find it to be a balanced debate about this headline-grabbing topic among alumni in the field and professors on campus.

One other thing you might also notice: the Class Notes section of the magazine has been moved. We’re still running the same items from alumni, announcing the latest news in their lives. Some items, and photos in particular, however, will be featured in a new fifth issue of Wharton Magazine, a surprise to be unveiled this spring. Stay tuned.