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U.S. Tornadoes

Find a list of the most deadly and intense tornadoes in the U.S. with casualty information. 1840 May 6, Natchez, Miss.: tornado struck heart of the city, killing 317 and injuring over 1,?

Railroad Accidents

While trains are convenient for travel and for transporting goods, they have become a greater danger over the years as their speed has?

Oil Spills and Disasters Timeline

The following list includes major oil spills since 1967. The circumstances surrounding the spill, amount of oil spilled, and the attendant environmental damage is also given. 1967 March 18,?

Sports Disasters

Dates and details of major disasters in sports 1955June 11, Le Mans, France: racing car in Grand Prix hurtled into grandstand, killing 82 spectators.1964May 24, Lima, Peru: more than 300?

Miscellaneous Disasters

1952 Dec. 4-7, London, England: high-pressure system settled over London, trapping pollution near the ground. Some 4,?

Earth's Greatest Volcanic Field

The largest known concentration of active volcanoes on Earth was discovered by scientists aboard the research vessel Melville (Nov. 1992?Jan. 1993). The vast volcanic cluster is situated?

Native States

Most of the 560-odd native states and subdivisions of pre-1947 India acceded to the new nation, and the central government pursued a vigorous policy of integration. This took three forms: merger?

Panama Canal.

In 1524, King Charles V of Spain ordered a survey of a waterway across the isthmus in consideration of building a canal. In 1878, the Colombian government gave a construction concession to?


Queen Elizabeth II, born April 21, 1926, elder daughter of King George VI and Queen Elizabeth, succeeded to the throne upon the death of her father on Feb. 6, 1952. On Nov. 20, 1947, she married?

Mason and Dixon's Line

Mason and Dixon's Line (often called the Mason-Dixon Line) is the boundary between Pennsylvania and Maryland, running at a north latitude of 3943'19.11". The greater part of it was surveyed?