New in Columns: Come back to campus. Six alumni show us there’s more to explore here at the UW. In a city plagued with toxic water, engineer Marc Edwards, ‘91, dives into the cause and exposes a government cover-up. Shwetak Patel is an inventor, professor and entrepreneur. Elements of those roles spill into his time off campus. We glimpse into highlights of his home life. The days of “drill and fill” are over. Dentists are now going digital, with a greater focus on prevention. Remember the Union Bay Village? Writer Peter Kahle takes us there with memories from his childhood.