Browse Reference Articles
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Continental crust
The continental crust is the layer of granitic, sedimentary and metamorphic rocks which form the continents and the areas of shallow seabed close to their shores, known as continental shelves. It is ... > more -
Geology of the Alps
The Alps form a part of a Tertiary orogenic belt of mountain chains along the southern margin of the continents Asia and Europe, called the Alpide belt. This belt of mountain chains was formed during ... > more -
Hurricane Mitch
Hurricane Mitch was one of the most powerful hurricanes ever observed, with maximum sustained winds of 180 mph (290 ... > more -
Effect of Hurricane Katrina on New Orleans
The effect of Hurricane Katrina on New Orleans was catastrophic and long-lasting. The storm, which was the costliest hurricane as well as one of the deadliest natural disasters in U.S. history, made ... > more -
Fire fighting
Firefighting is the act of extinguishing destructive fires. A firefighter fights these fires and prevents destruction of life, property and the environment. Firefighting is a highly technical ... > more -
1991 Halloween Nor'easter
The 1991 Halloween Nor'easter, also known as the Perfect Storm, was an unusual and very powerful nor'easter combining an extratropical low and two hurricanes in October of ... > more -
Hurricane Hugo
Hurricane Hugo was a destructive Category 5 hurricane that struck Puerto Rico, St. Croix, South Carolina and North Carolina in September of the 1989 Atlantic hurricane season, killing at least 70 ... > more
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