Word: layers
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...when we first stepped in the front door, we gasped. The house was in a state of utter disrepair. The basement had recently flooded, the ceiling had a hole in it and the entire interior of the house was coated with a thick layer of grime. As we walked through the house, we saw more dirt and destruction than we had ever seen indoors. The furniture was falling apart, and every abandoned wall-hanging--from the grubby Olympics posters to the 8-by-10 foot American flag (in patriotic red, gray and blue)--was a cover for a "Shawshank Redemption...
...nearby, bear-shaped rock named Yogi, stopping on the way to test the consistency of the soil by using five of its wheels for traction and one to dig into the dirt. Sojourner's cameras showed that the rover's shove had displaced what seemed to be a thin layer of crust over the soil. "We used the rover as sort of a bulldozer," explained Golombek...
...taking radar soundings to look for water beneath its crust. If the radar picks up the telltale echoes of liquid, another spacecraft would be sent to land on Europa. Once there it would release a small cylindrical probe with a heated tip that would melt through the ice layer and propel itself through the frigid ocean, looking for signs of life...
Kate is an especially well-drawn character, neither cute nor tragic, believable as eight. As the pilgrimage falls apart, she yearns for solidity: her father, if possible, or the Grand Canyon, to which he promised to take her, and where the name of a layer of rock, Bright Angel Shale, has caught her imagination. Eventually she gets there...
...20th century. After it was first used to purify water supplies in the early 1900s, typhoid fever, cholera and dysentery virtually disappeared from the U.S. But the chemical has been under attack in recent years by environmentalists for contributing to the destruction of the earth's ozone layer. Greenpeace's "Chlorine Kills!" campaign is focused primarily on paper bleaching and other industrial uses, but the organization also urged pool operators to look for an alternative to chlorine...