Word: phosphorus
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...Cattails are taking over the eastern Everglades, crowding out the saw grass and choking the algae at the base of the ecosystem's food chain. Cattails now cover 20,000 acres of what was once pristine wetland. Grown thick and tall (some more than 8 ft. high) in the phosphorus-filled runoff of nearby sugar and vegetable plantations, they stand as a symbol of the decades of mismanagement that have brought the famous region to the brink of environmental collapse...
...1950s began laying down a system of ditches so vast that astronauts can spot its outlines from space: 1,400 miles of levees, pipes and canals. Today nature's cycle had been largely replaced by a man-made plumbing system that is polluting the Everglades with the phosphorus-rich runoff that cattails find so nourishing...
...restore some of the sheetlike flow of the original ecosystem, the state of Florida proposed setting aside around 35,000 acres of cropland to act as "filtering marshes." Irrigation water drained from the fields would be held in the treatment areas until natural action of plant life lowers the phosphorus content to acceptable levels...
...summary said radioactive Phosphorus-32 dripped onto the floor in the Medical School's Building D on January 13 from a cart used to transport radioactive waste away from the laboratories. While the spill was not detected for two hours, "no radioactive material was found on individuals, except for trace amounts on the bottom of the shoes of a few employees," the summary said...
...report listed four causes of the spill: a mistake by a researcher in the preparation of a jar for waste disposal, a possible leaky cover for the jar containing Phosphorus-32, the failure of the waste collector to secure the jar in the cart and deficiencies in the cart...