Summary: A magnitude 8.9 earthquake — the biggest in modern Japanese history — unleashed a 23-foot tsunami that swept boats, cars, buildings, and tons of debris miles inland and prompted a “nuclear emergency.” Warnings blanketed the Pacific, putting areas on alert as far away as South America, Canada, Hawaii, Alaska, and the entire U.S. West Coast. … One-year retrospective: One year ago today, on March 12, 2010, Aubrey Immelman reported that in the fourth major terrorist attack in Pakistan in a week, a pair of suicide bombers targeting army vehicles detonated explosives within seconds of each other, killing at least 43 people in the eastern city of Lahore and wounding about 100.