Kids News - Articles for Grades 3-3

How The Removal Of A 'Nuisance' Predator Wreaked Havoc On Yellowstone National Park's Ecosystem

In the 1800's the Rocky Mountain West area of the USA that now includes Yellowstone National Park, was teeming with gray wolves. However they were considered nuisance predators who killed livestock and therefore, actively hunted down. By the time the National Park was established in 1827, the number of gray wolves had diminished substantially, a trend that continued thanks to a government predator control program that ensured that by 1926, there were none left....

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How The Removal Of A 'Nuisance' Predator Wreaked Havoc On Yellowstone National Park's Ecosystem

Scientists Use GPS To Solve The Mystery of Death Valley's 'Rolling Stones'

Death Valley National Park in California's Mojave Desert is known for many things - Its extreme temperatures, varied altitude that ranges from 282ft. below sea level to 11,000ft. above, beautiful rugged terrain and most of all, 'rolling' or 'dancing' stones. The phenomenon whereby large boulders, some weighing as much as 500 lbs, move several hundred yards in a straight line or zigzag patterns, has confounded experts for years....

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Scientists Use GPS To Solve The Mystery of Death Valley's 'Rolling Stones'