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Greenland ice sheet
The Greenland Ice Sheet is a vast body of ice covering roughly 80% of the surface of Greenland. It is the second largest ice body in the world, after the Antarctic Ice Sheet. The ice sheet is almost ... > more -
Artesian aquifer
An artesian aquifer is a confined aquifer whose water is pressurized. Water will thus flow out of an artesian well without ... > more -
Pyroclastic flow
Pyroclastic flows are a common and devastating result of some volcanic eruptions. They are fast-moving fluidized bodies of hot gas, ash and rock (collectively known as tephra) which can travel away ... > more -
Dust storm
A dust storm (or sandstorm in some contexts) is a meteorological phenomenon. Such a storm is usually the result of convection currents created by intense heating of the ... > more -
Cyclone Mala
Cyclone Mala, also known as Very Severe Cyclonic Storm Mala, was the strongest tropical cyclone of the 2006 North Indian cyclone ... > more -
1976 Tangshan earthquake
The Tangshan earthquake of July 28, 1976 is one of the largest earthquakes in loss of life to hit the modern world. The epicentre of the earthquake was near the industrial city of Tangshan in Hebei, ... > more
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