An explosion tears apart a 6-story commercial building in San Juan, Puerto Rico.
Workers are trapped in the top floors of a commercial tower during a building fire in Hong Kong.
Forensic engineers piece together the sequence of events for huge explosions in the Nevada desert.
The MV Rocknes, the world's largest fallpipe rock dumping vessel, suddenly capsizes near Bergen, Norway, killing 18.
A four-carriage, double-decker passenger train derails and slams into a rock face.
A fireworks depot in a Dutch residential neighborhood catches fire and explodes, killing and injuring people.
Investigation of the fire at the London Underground's King's Cross Station.
One of the biggest ships ever built vanished during Typhoon Orchid without sending a mayday.
Secrets in the original blueprint explain the collapse of Seoul's Sampoong department store.
In July 1999, a gigantic crane collapses in Milwaukee, killing three workers.
In 1998, one of Germany's bullet trains derailed killing more than 100 people.
Skiers are killed in a funicular fire at the Kaprun ski resort in Austria.