Intermediate Word:  plethora -  (a) goatskin flask  (b) superabundance  (c) membrane separating the upper and lower intestines  (d) praise
Difficult Word: - ekistics  (a) science of city planning  (b) evolutionary science  (c) study of ancient art, seeking archeological clues  (d) study of prehistoric migrations

Inexpensive, Mass-Produced Genes At Core Of Synthetic Biology Advances At UH - SpaceDaily  Devices the size of a pager now have greater capabilities than computers that once occupied an entire room. Similar advances are being made in the emerging field of synthetic biology at the University of Houston, now allowing researchers to inexpensively program the chemical synthesis of entire genes on a single microchip. Xiaolian Gao, a professor in the department of biology and biochemistry at UH, works at the leading edge of this field. Her recent findings on how to mass produce multiple genes on a single chip are described in a paper titled "Accurate multiplex gene synthesis from programmable DNA microchips," appearing in the current issue of Nature, the weekly scientific journal for biological and physical sciences research. "Their organization is very complex, even in simple organisms."    
Clusters Of Earthquakes Yield An Ominous Scenario - SpaceDaily  Left:  The Cascadia Subduction Zone is a very long sloping fault that stretches from mid-Vancouver Island to Northern California. It separates the Juan de Fuca and North America plates. New ocean floor is being created offshore of Washington and Oregon. As more material wells up along the ocean ridge, the ocean floor is pushed toward and beneath the continent. The Cascadia Subduction Zone is where the two plates meet.  According to scientists at Oregon State University, this subduction zone has just experienced a cluster of four massive earthquakes during the past 1600 years, and if historical trends continue, this cluster could be over and the zone may already have entered a long quiet period of 500 to 1,000 years  

Deep Impact Set For Launch But Scientists Must Wait Six Months For Main Event - SpaceDaily  If all goes as planned, Deep Impact will become the first mission to slam into a comet, giving astronomers worldwide something far better than any other fireworks show on July 4, 2005 the first look inside a comet at the most primitive material left in the solar system. "Other comet-rendezvous missions have proposed sampling less than a foot into the upper surface. But that doesn't get at the ices in the interior, which scientists believe are early solar system materials that have been kept in the deep freeze for the past 4.5 billion years."  

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