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Tropic of Cancer
The Tropic of Cancer, or Northern tropic is one of the five major circles of latitude that mark maps of the Earth. It is the parallel of latitude that lies currently 23 degrees 26′ 22″ ... > more -
Great Hurricane of 1780
The Great Hurricane of 1780 is considered the deadliest Atlantic tropical cyclone of all time. About 22,000 people died when the storm pounded Barbados, Martinique, and Sint Eustatius in the Lesser ... > more -
Bermuda Triangle
The Bermuda Triangle (also known as Devil's Triangle) is a 1.5-million-square-mile area of ocean roughly defined by Bermuda, Puerto Rico, and the southern tip of Florida. Some believe it is a ... > more -
Hayward Fault Zone
The Hayward Fault Zone is located in northern California in the San Francisco Bay Area. It is parallel to and east of its more famous (and much longer) sister fault, the San Andreas ... > more -
Introduced species
An introduced species (also known as an exotic species) is an organism that is not native to the place or area where it is considered introduced and instead has been accidentally or deliberately ... > more -
Monarch butterfly
The Monarch butterfly (Danaus plexippus) is a well-known North American butterfly. Its wings feature an easily recognizable orange and black pattern. Monarchs are especially noted for their lengthy ... > more -
Hurricane preparedness for New Orleans
Hurricane and flood preparedness in New Orleans has been an issue since the city's early settlement because of the city's location. Much of New Orleans was built on a delta marsh and sits below sea ... > more
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