Today in history: On April 16, 2007, Seung-hui Cho, a 23-year-old Virginia Tech student, killed 32 people on the Virginia Tech campus before taking his own life. It remains the deadliest school history in US history. Also on this date: In 1945, a Soviet submarine in the Baltic Sea torpedoed the ship MV Goya, which Germany was using to transport civilian refugees and wounded soldiers. As many as 7,000 people died as the ship broke apart and sank minutes after being struck. In 1947, the French