Few Cornellians sit in class and pass the time before their professors begin lecturing by reading The Economist. Fewer reach for each weekly edition at the Cornell Store and think, “I could learn a lot about this cover, a lot about geopolitics and energy.” But this is exactly what Chief Energy Economist for Deutsche Bank, Adam E. Sieminski ’71, does. Yesterday, Sieminski came back to his alma mater to give a lecture co-sponsored by the Cornell Institute for Public Affairs, titled “What We Can Learn About Energy and Geopolitics from the Cover of The Economist Magazine.”