"TwHistory is about helping students experience a slice of time through the eyes of another person. The aggregate of these personal experiences can then give a unique perspective of an event in history. It's dull to memorize the events of the 13 days of the Cuban Missile Crisis for a pop quiz but it gets your attention when McNamara drops the F-bomb on Twitter because the world is about to end in a big nuclear fireball."
Tokyo (CNN) -- Japan added to global growth jitters on Friday by posting unexpectedly weak industrial production numbers for July and a muted outlook for August and September. Economists had been expecting a 1.7% increase in output from the manufacturing sector from June, boosted by the effects of reconstruction spending in the tsunami-hit Tohoku area.