Video encyclopedia

Flashback calendar

Nakumatt supermarket fire

A supermarket in downtown Nairobi, Kenya, caught fire. Twenty-nine remains have thus far been located in the rubble of the destroyed Nakumatt supermarket, with police investigating a tip that security guards locked exit doors in an effort to prevent looting. 29 people died.

Katowice Trade Hall roof collapse

The roof of one of the buildings at the Katowice International Fair collapsed in Chorzów / Katowice, Poland. The cause was probably the weight of the snow on the roof. There was one more collapse during the rescue operations. 65 people were dead, and 170 injured.

Space Shuttle Challenger disaster

On its way to NASA shuttle orbiter mission, the shuttle broke apart 73 seconds into its flight over the Atlantic Ocean. All 7 crew members died. The original cause was an O-ring seal in its right solid rocket booster failing at liftoff because it was not designed to fly under unusually cold conditions.