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Ice's Protective Properties
A change in physical state when water freezes causes the release of heat, insulates, and prevents pond organisms from freezing solid.
Jan 28, 2009
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Albert Burchsted
The Structure of a River
A river or stream is more than just moving water. Learn how water, rocks, soil, and debris interact inside a river channel.
Dec 28, 2008
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Tricia Edgar
Why it Rains a Lot Near the Mountains
Ever wondered why it rains more in the mountains? One of the reasons for mountain rainfall is orographic lift, or the orographic effect on precipitation.
Dec 27, 2008
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Tricia Edgar
Singing Sands are a Natural Phenomenon
When most people think of music, "sand" never comes to mind - but nature has been known to play its own tune. Although rare, singing sands can be heard around the world.
Dec 10, 2008
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Jessica Cochran
Seeing Snow Cover from Space
The view from space provides scientists on the ground a good look at snow cover and the weather's effects on land surface features.
Nov 26, 2008
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Kelly Whitt
Isle of Harris Whaling Station, Scotland
Early in the twentieth century there was a successful whaling enterprise based in the Outer Hebrides.
Oct 30, 2008
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John Blatchford
Satellite Image Archive Accessible From USGS
Remarkable images of conditions present on the Earth's surface for the last 35 years are available to the public through the USGS Landsat Image Archive.
Aug 7, 2008
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Alan Sorum
What is Biogeography? Careers and Academia
In an increasingly specialised world, biogeography is the natural result of the need to study the effects geography has on a biology and biodiversity.
Jun 20, 2008
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Stephanie Cox
Ecology and History of the Amazon Rain Forest
The Amazon rain forest houses the Amazon River and rich ecological biodiversity. Taking up the majority of Brazil, the Amazon's biology and ecology is truly unique.
May 28, 2008
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Stephanie Cox
Ptolemy and Geography
Ptolemy's geography contained many errors, but it also pioneered many concepts that we still use today.
Apr 30, 2008
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Paul A. Heckert
Christmas Island
Founded by the East India company in 1643, Australia's Christmas Island possesses quite a rich and diverse history all its own.
Apr 14, 2008
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Isaac M. McPhee
Seven Wonders of the World
There are lists highlight outstanding man-made achievements of engineering and construction of the ancient, medieval and modern world and celebrating nature's best.
Feb 7, 2008
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Susan Whelan
