BP Gulf of Mexico oil spill.
Otherwise known as the Deep water Horizon Spill and the Macondo Blowout, the ongoing British Petroleum oil spill in the Gulf of Mexico is thought to be the worst to date.
The spill began on April 20, when an oil well 1,500m below the surface blew out, causing a catastrophic explosion on BP's Deep water Horizon offshore oil drilling platform about 64 km southeast off the coast of Louisiana.
Eleven workers died in the blast and another 17 were injured.
The Cyclone Mahira in 1899 was the worst natural disaster in Australia.
Granville Train Disaster - 18 January 1977, Granville, New South Wales
There is no difference between the reaction to a manmade disaster and the reaction to a natural disaster
Yes, Bhopal Gas Tragedy is a man-made disaster
eastland disaster
a natural or manmade event that destroys properts and causes injuries and/or loss of life
Hurricane Katrina was the costliest U.S. natural disaster, and one of the deadliest. So it ranks as one of the worst U.S. disasters, but probably not the worst.
The shuttle program began with the flight of the columbia, and its worst disaster was the explosion of the challenger.
It depends. The worst disaster can be anything. Like if someone you love dies or your house burns down. It's an opinion.
It is difficult to determine the "worst" natural disaster as each disaster has varied impacts depending on factors like location and population density. Some of the most devastating natural disasters include earthquakes, tsunamis, hurricanes, and volcanic eruptions. The severity of the disaster is typically measured by the loss of life, property damage, and long-term impacts on the affected area.
Chernobyl
The world's worst known nuclear disaster was at Chernobyl, in the Ukraine. The Chernobyl Disaster, as it is called, happened on April 26, 1986. There is a link to a Wikipedia article on this below.