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This radio broadcast describes a technique called 'salinity shock' which is being used to kill plants and animals that ride in ballast water on ships. Oceangoing ships are now dumping their freshwater ballast at sea and...
Scientists clean up chemicals like polychlorinated biphenyls (PCBs) with help from vegetables like pumpkins and zucchini. This radio broadcast explains how certain vegetables can be grown to absorb pesticides and...
This radio broadcast describes efforts to control the population of sea lampreys in the Great Lakes. Sea lampreys, an invasive species from the Atlantic Ocean, have populated the lakes for years, but have recently...
This radio broadcast discusses the recent issue of the increase and spread of tunicates (or 'sea squirts'), who have suddenly proliferated off the Atlantic Coast of the United States and Canada. The creatures, an...
Glaciers are found on every continent except Australia. This interactive feature provides an introduction to these moving streams of ice, which cover about 10 percent of Earth's land surface and hold between two and...
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