Boston Marathon Bombing (2013)
Cultural Revolution Turmoil (1966-1976)
Beslan School Siege (2004)
The Halifax Explosion (1917)
Air France Flight 447 Crash (2009)
Tasmanian Drought Crisis
Coal Mine Explosions and Accidents
Buenos Aires Subway Fire (2004)
Zhanaozen Massacre (2011)
1988 October Riots and Crackdown