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...
By: Kenneth Black
Rain - our planet depends on it as a valuable step in the water cycle. But what places on earth contribute to that cycle the most? While the media and others in popular culture never cease to remark about the wet weather in Seattle or...
The danger of pollution-based acid rain
By: CD Gozzi
Acid rain is a general expression that refers to the concoction of wet and dry deposited substances from the atmosphere that have a greater than usual quantity of nitric and sulfuric acid. This is caused by both natural and man made sources. Natural sources include...
Rainiest places in the world
By: JoAnne Windsinger
Rainiest Places in the WorldRain brings life. It greens up the earth, makes things grow, and is essential for an abundant life. Children chant for it to go away. Musicians write songs about it. Lovers walk in the seclusion it provides or duck into secret...
The nautical mile: Its length and definition
By: Michael Fassbender
Today there is an international standard for the nautical mile: 1.1508 miles, or 1.852 kilometers. Strictly speaking, these figures are not derived from surface distances, but rather from the curvature of the earth at the Equator.Since the earth is basically a sphere...

 

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