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Tropical cyclone
A tropical cyclone (also referred to as a tropical depression, tropical storm, typhoon, or hurricane depending on strength and geographical context) is a type of low pressure system which generally ... > more -
1906 San Francisco earthquake
The San Francisco earthquake of 1906 was a major earthquake that struck San Francisco and the coast of northern California at 5:12am on Wednesday, April 18, ... > more -
Organic farming methods
Organic farming methods combine scientific knowledge and modern technology with traditional farming practices based on thousands of years of agriculture. In general, organic methods rely on naturally ... > more -
Supervolcano
A supervolcano refers to a volcano that produces the largest and most voluminous kinds of eruption on Earth. The actual explosivity of these eruptions varies, but the sheer volume of extruded magma ... > more -
Atmospheric circulation
Atmospheric circulation is the large-scale movement of air by which heat is distributed on the surface of the Earth. The wind belts and the jet streams girdling the planet are steered by three ... > more -
Labor Day Hurricane of 1935
The Labor Day Hurricane was a very compact, intense hurricane that formed in the North Atlantic during August 1935. It remains the strongest hurricane on record to have struck the United States, and ... > more -
Radiant energy
Radiant energy is the energy of electromagnetic waves. The term is most commonly used in the fields of radiometry, solar energy, heating and lighting, but is also used less frequently in other fields ... > more -
Chimpanzee
Chimpanzee, often shortened to chimp, is the common name for the two extant species in the genus Pan. The better known chimpanzee is Pan troglodytes, the Common Chimpanzee, living primarily in West, ... > more -
Slash and burn
Slash and burn (a specific practice that may be part of shifting cultivation or swidden-fallow agriculture) is an agricultural procedure widely used in forested areas. Although it was practised ... > more
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