Growlers: Polar icebergs
By: Alison Bowler
Icebergs are floating chunks of frozen fresh water. They are formed in the polar regions when blocks of ice break free from their parent ice shelf in a process called calving. Once detached from the ice shelves, icebergs can be moved into warmer latitudes by...
Defining fjords
By: Alison Bowler
A coastline defined by fjords is one of the most rugged and beautiful in the world. A fjord or fiord is a narrow steep sided valley formed by a glacier. The word is of Scandinavian origin and was originally used in naming these features on...
By: Rex Trulove
The beauty and serene quality of a natural lake is hard to ignore. Lakes are formed by several means, and the different ways they form change the nature of the lake, and also its depth. Most lakes are no more than a few dozen yards...
Understanding groundwater, wells, and hydrology
By: Effie Moore Salem
Hydrology is the study of water and how it maneuvers itself around, through, over and into rocks and sand and soil. Ground water when mixed with soil usually turns into mud. I say usually because some soil is so nonporous that when mixed with water...
Growlers: Polar icebergs
By: Sandra Petersen
When you think about the seas around the North or South Pole, what image comes to your mind? Most likely, you conjure up a picture of polar bears, icebergs, and frigid waters. Not every ice chunk floating in polar waters is an iceberg. Some are...
By: Sarah Williams
Nearly seventy percent of the Earth's surface is covered in water; from oceans to rivers, and lakes to streams. There are countless bodies of water across the globe that can be considered "lakes", and it's likely that we've all either seen, swam in, or boated...
By: Debby Dyess
My first exposure to rivers was the movie The African Queen (1951) when I was a child. Intrigued by the adventure and beauty of the unnamed East African waterway, I dove into The Adventures of Tom Sawyer as soon as I was old enough to...
Longest rivers on earth
By: Kenneth Black
Romance, myths, conquests, commerce - the world's longest rivers all of have something in common; they capture our imaginations. Indeed, rivers are a lifeline for much of the world's population. The major rivers especially seem to be able to entrench themselves into our culture and...
Uses of potable water
By: Alison Bowler
Potable water is water that is fit for human consumption. Without water we die so a safe drinking supply can be deemed essential for life. It should be free of any pathogenic bacteria and parasites. In addition there is usually a legal maximum of chemicals...
The tallest waterfalls in the world
By: Monique Nelson
The Tallest Waterfalls in the World:This is a difficult topic to discuss with 100% accuracy because there is no universally accepted standard as to what makes a waterfall a waterfall, let alone how they can be accurately measured. There are many waterfalls that are not...

 

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