If you can do only one thing in Milan, be sure to see Leonardo da Vinci’s The Last Supper, housed in Santa Maria delle Grazie Church. Plan ahead — even calling a few weeks or months in advance is a good idea — as reservations are required to secure one of the 15-minute slots to see the recently restored masterpiece. Call for reservations (tel 39 02 8942 1146) between 9 a.m. and 6 p.m. on weekdays and 9 a.m. and 2 p.m. on Saturday. Visiting hours are 8 a.m. through 6:45 p.m. Tuesday through Sunday. Some online agencies also sell reservations, but there’s usually an additional service charge.
United Airlines remains firmly committed toward sustainability in aviation. The latest development in its eco-conscious goals includes working with Oxy Low Carbon Ventures to commercialize the production of sustainable aviation fuels (SAF) with biotech firm Cemvita Factory. Cemvita looks to develop a revolutionary new way to produce SAF by using carbon dioxide and synthetic microbes. Additionally, United Airlines Ventures (UAV) recently announced an equity investment in Fulcrum, and United has invested more in SAF production than any other airline in the world.