For centuries drought has come and gone across northern sub-Saharan Africa. In recent years, water shortages have been most severe in the Sahel—a band of semi-arid land situated just south of the Sahara Desert and stretching ...
Environment
Jan 10, 2017
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80
As a raindrop falls through the atmosphere, it can attract tens to hundreds of tiny aerosol particles to its surface before hitting the ground. The process by which droplets and aerosols attract is coagulation, a natural ...
Earth Sciences
Aug 28, 2015
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911
Japanese scientists have fired cloud seeding equipment to help top up reservoirs serving the 35 million people of greater Tokyo, officials said Friday, amid a sweltering summer dry spell.
Environment
Aug 23, 2013
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As cicadas on the East Coast begin emerging from their 17-year slumber, a spritz of dew drops is all they need to keep their wings fresh and clean. Researchers at Duke University and James Cook University in Australia have ...
General Physics
Apr 29, 2013
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1
(PhysOrg.com) -- As with many of man's most basic ancient desires; to be able to fly, to become invisible etc. making it rain on command (or by prayer) has always been high on the list, and up to now, has proved more elusive ...
A new air-quality measuring instrument invented by Pat Arnott and Ian Arnold of the University of Nevada, Reno that is more economical, more portable and more accurate than older technologies has been licensed for commercial ...
Environment
Mar 29, 2011
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0
The Sierra Nevada mountain range reached its present height 50 million years ago -- 30 million years earlier than geologists once believed, according to a new study.
Earth Sciences
Jan 11, 2010
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(AP) -- On a mountaintop clearing in the Sierra Nevada stands a tall metal platform holding a crude furnace and a box of silver iodide solution that some scientists believe could help offer relief from searing droughts.
Earth Sciences
Dec 10, 2009
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