Intermediate Word:  detritus -  (a) loose rock fragments  (b) knick-knacks  (c) dust  (d) an uncollectable debt
Difficult Word: - friseur    (a) trend-setter  (b) hairdresser  (c) seltzer bottle  (d) in charge of food for a restaurant

Nanotechnology Could Promote Hydrogen Economy - SpaceDaily  In a paper to be published April 20 in the Journal of the American Chemical Society, researchers at Rutgers, The State University of New Jersey, describe how they make a finely textured surface of the metal iridium that can be used to extract hydrogen from ammonia, then captured and fed to a fuel cell. The metal's unique surface consists of millions of pyramids with facets as tiny as five nanometers (five billionths of a meter) across, onto which ammonia molecules can nestle like matching puzzle pieces. This sets up the molecules to undergo complete and efficient decomposition.   
Quasiparticle Behavior In Bose Quantum Liquids - SpaceDaily  Quasiparticles carry energy in condensed matter. In the world of quasiparticle physics, understanding when and how these energy carriers fail opens doors to another level of understanding, and can lead the way to many new and important theories. Scientists at the U. S. Department of Energy's Brookhaven National Laboratory have discovered the failure point for the quasiparticle construct, the standard model of condensed matter physics. This could have far-reaching implications, for example, in the study of high-temperature superconductors.    


Dubai tower to be world's tallest building  - CNN  Left:  An artist drawing of the Burj Dubai -- developers aren't saying how high the skyscraper will top out, but observers say it will be above 2,300 feet (700 meters).   The developers say dozens of stories taller than skyscrapers in Taiwan, Chicago or anywhere else. But they are keeping the exact height a secret to flummox competitors in the world's furious race for the title of tallest skyscraper. Booth said jokingly that once completed in 2008, the $900 million Burj will sport a movable spire to keep observers from ever gauging the true height. The craze for height has hit hardest in industrializing Asian countries like Taiwan, Hong Kong and China, which boast seven of the world's 10 tallest buildings. The current tallest, at 101 floors, is the Taipei 101 in Taiwan, though Toronto's CN Tower is 180 feet higher, largely because of its huge antenna. New York built skyscrapers because land was scarce; Dubai is doing it to get on the international map.

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