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Types of Volcanoes

Geologists describe four types of volcanoes. Cinder cones, the simplest of volcanoes, grow as pieces of congealed lava rise from a central vent and form a funnel-shaped crater. Lava domes arise from lava too viscous to flow far or fast. The dome accumulates atop a central vent and expands from the inside. Shield volcanoes grow as fluid lava spreads ...

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TypesofVolcanoes
Physics

X-Rays - Another Form of Light

A new form of radiation was discovered in 1895 by Wilhelm Roentgen, a German physicist. He called it X-radiation to denote its unknown nature. This mysterious radiation had the ability to pass through ... Continue reading

XRays
Engineering

New York to London in Less Than Two Hours

If flying from New York (USA) to London (UK) in less than two hours sounds like science fiction, continue reading. On September 1, 1974 Major James V. Sullivan, 37 (pilot) and Noel F. Widdifield, 33 ... Continue reading

FastestPlane
Geology

A Voggy Day On The Big Island

On the morning of February 8, 2000, Harry Kim, Director of Hawai`i County Civil Defense, asked radio stations on the Island of Hawai`i to broadcast a special message concerning the thick, acrid haze ... Continue reading

AVoggyDayOnTheBigIsland
Engineering

Hollywood To The Rescue

Sixty years ago, World War II was driving many advances in the sciences; a surprising number of these developments have evolved to impact our lives today. At the beginning of the war, scientists and ... Continue reading

HollywoodRescue

Cougars, A Jumping Star

CougarsAJumpingStarCougars would make great basketball or track-and-field players. Of all the big cats, they are the best jumpers. They can jump 40 feet forward from a standing position, and 15 feet or higher straight up - higher than a basketball hoop.

They're strong, too. A cougar, weighing typically 130 pounds but as much as 200 pounds, can use its jaw to kill an elk four to five times its weight, by leaping onto the animal's back and breaking its spinal cord at the base of its skull. The cougar can kill almost any animal, but it avoids bad odds, keeping clear of wolves, grizzly bears, and other big cats. But its killing prowess is only one reason you probably wouldn't want a cougar on your team.

The cougar is a solitary cat, rarely seen; Native Americans once called it the 'ghost walker.' It avoids other animals and even, except when mating, other cougars. It roams a territory as large as 300 square miles, and on the rare occasion it does meet up with another cougar, it isn't likely to fight over its territory--much less go the distance to cross the finish line or slam dunk the winning two points for your team.