Moore, Oklahoma, had the worst luck. Over the course of fifteen years, the Oklahoma City suburb would have five major tornados blow through the area, causing billions of dollars in damage. One in particular which struck on May 20, 2013, caused another tragic kind of damage, heading straight for two of the town's elementary schools.

On this International Cat Day, we look back at the story of a leopard whose feeding habits veered away from its normal prey into the human world, and a hunter determined to stop its deadly eight-year spree in northeastern India. 

It was the deadliest building fire in United States history, twice as deadly as the fire which tore through the city three decades earlier. Chicago thought it had seen the worst that fire could do, but then came the afternoon of December 30, 1903. The Iroquois Theater was filled and then some - with children on Christmas break and their parents, with teachers enjoying their own time off, with college students wishing to enjoy a show with their friends. "Mr. Bluebeard" was supposed to be a spectacle, and it was - a terrifying one.

Four years ago this week, a plane full of innocent people just going about their lives - returning home, heading for vacation in Malaysia, flying to an international AIDS conference in Melbourne - unwillingly became a pawn in a war they played no part in before that day. On July 17, 2014, someone in an Ukrainian war zone looked up and thought they saw enemy military aircraft overhead. So they positioned their Russian-made missile and fired. What happened afterward would be a subject of debate - and a source of international tensions - to this day.

During the sweltering Easter holidays in Guadalajara, Mexico, in 1992, the Reforma district reeked for days. Everything smelled of gas, but no one could figure out precisely where the source was. Tap water stank. Manhole covers rattled where they sat in the street. On Wednesday, April 22nd, one explosion after another tore through the working-class neighborhood and left the streets a ragged canyon winding through Guadalajara. 

Neerja Bhanot was uniquely successful in two fields - as a model, and as a senior purser for international airline Pan Am. But on September 5, 1986, the bravery of Neerja and her cabin staff was tested when a group of armed militants stormed the plane, demanding to be flown to Cyprus. What would happen over the next seventeen hours would be terrifying, chaotic, and in the end a display of the heroism on one incredible cabin crew. 

It would take the worst terrorist attack in modern times to steal the Joelma Building fire's title as the deadliest high-rise fire. On February 1, 1974, the office building in downtown Sao Paulo, Brazil, was slowly filling with hundreds of employees starting their work day. Then an air conditioner on the twelfth floor sparked. Within hours, at least 179 people would be dead from the sudden and all-encompassing conflagration.

It was only supposed to last a few hours. All they would have to do was keep quiet, keep their heads down, and wait it out until they reached Houston. But at two AM on the morning of May 14, 2003, the driver of a truck would pull over near a truck stop and open the trailer at the back to a horrifying scene.

Graniteville, South Carolina, is like a lot of small towns - quiet and filled with hard-working people. It was the quiet that was broken when a moving train struck another train parked on a spur in the early morning hours of January 6, 2005, and it was the hard-working people who suffered when a damaged tanker began leaking deadly chlorine gas into the air. (TW: Discussion of suicide.)

It was hot that day in August of 1966, so hot you probably could have cracked an egg and cooked it on the sidewalk. Students walking the campus of the University of Texas at Austin did so under the watchful eye of the main building's tower. As noon neared, everyone was looking forward to heading off to lunch. That's when the shooting began. It wouldn't end for another ninety-six minutes.