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CORVALLIS, Ore. -- There is a lot of plastic trash floating in the Pacific Ocean, but claims that the "Great Garbage Patch" between California and Japan is twice the size of Texas are grossly exaggerated, according to an analysis by an Oregon State...
When it comes to nanotechnology, many researchers turn to nature for inspiration. Of particular interest to nanoengineers is the naturally occurring protein kinesin - one of several ''motor molecules'' that facilitate movement in living cells. A mere ten-millionth of an inch long, kinesin is the workhorse of the cell, hauling chromosomes, neurotransmitters and other vital cargo along tiny tracks called ''microtubules.'' While one end of a kinesin molecule holds onto its cargo, the other end uses a strange two-headed structure to grab the microtubule and pull the cargo forward.
Aluminum -- one of nature's best conductors of electricity conductors of electricity -- may behave like a ceramic or a semiconductor in certain situations, according to an Ohio State University scientist and his colleagues. Among the findings that appear in the current issue of the journal Science: When it comes to forming tiny structures in computer chip circuits and nanotechnology, aluminum may endure mechanical stress more than 30 percent better than copper, which is normally considered to be the stiffer metal