Intermediate Word:  concierge  (a) a sauce of melted butter, chives, herbs, and scallions   (b) waiter  (c) French doorman/janitor  (d) taxi driver
Difficult Word: -plica  (a) surplice  (b) a fold of skin or shell  (c) prayer book  (d) Asiatic rodent

Reflections On Life..In The Jungle - SpaceDaily  Left:  Synthetic Aperture Radar is changing our view of the world.  Flying over the La Selva rain forest in Costa Rica, scientists aboard the flying laboratory are using an all-weather imaging tool called the Airborne Synthetic Aperture Radar (AirSAR). The radar, developed by NASA's Jet Propulsion Laboratory, Pasadena, Calif., can penetrate the dense rain forest canopy and scan through clouds to produce highly accurate topographic computer models. AirSAR 2004 scientists are endeavoring to accurately inventory Costa Rica's tropical rain forests and irreplaceable archaeology by characterizing past and present human impacts on them.
Clues To Life In The Mines Of Murgul  The Mine of Murgul sounds like an ominous place in "The Lord of the Rings," a dark cavern filled with menacing orcs and trolls. But, in fact, this copper mine in Turkey may help shed light on life's origin. The mine contains pyrite, a form of iron sulfide (FeS2) also known as "Fool's Gold." This iron sulfide mineral may have acted as a template for the early chemical reactions that led to amino acids, proteins, and other building blocks of life. Pyrite has been the focus of theories regarding the origin of life since 1988, when a German patent lawyer named Gunter Wächtershäuser suggested that pyrite may have acted as a catalyst for the chemistry of living cells. 

A little planet's big impact - SpaceDaily  Left:  These three panels show the first detection of the faint distant object dubbed "Sedna." Imaged on November 14th from 6:32 to 9:38 Universal Time, Sedna was identified by the slight shift in position noted in these three pictures taken at different times. Subsequent observations at longer time intervals provided the information necessary to deduce the nature of Sedna's 10,500 year orbit around the Sun. The field of view of each frame is 3.4 arcminutes square, and each pixel is 1.0 arcsecond. NASA/Caltech Image Data - SpaceDaily Gif  In November 2003, Mike Brown and colleagues at the California Institute of Technology compared three time-lapsed images of the night sky and found the unmistakable motion of a solar system object the size of a very small planet.  

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