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  1. Materials Science

    Molecular Separations: New artificial sieve traps molecules

    Researchers have created a metal-laced organic solid that acts as a sieve with nanosize pores for capturing molecules.

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  2. Making Mice Mellow: Rodents yield clues to improved anxiety drugs

    Mice bred to lack a gene for a certain enzyme exhibit reduced anxiety and greater curiosity in stressful laboratory tasks, suggesting a possible new avenue of research into anti-anxiety medications.

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  3. Humans

    From the April 19, 1930, issue

    TRAVEL TO THE MOON BY THE YEAR 2050 By the year 2050, Earth-dwellers will probably be able to travel to the moon and to communicate with their terrestrial home by telephoning over a beam of light. They will get there by traveling in a rocket ship at a speed of some 50,000 miles an hour, […]

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  4. Tech

    Engineering Top 20

    Airplanes, telephones, refrigerators, and spacecraft are among the life-changing technological accomplishments highlighted at the National Academy of Engineering’s Greatest Engineering Achievements of the 20th Century Web site. A variety of illustrations, a brief history, and a timeline of important landmarks accompany each entry. Go to: http://www.greatachievements.org/

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  5. Tech

    Solar Surgery: Sunlight acts like laser

    By channeling sunlight down a fiber optic cable, scientists have produced laserlike beams that can burn tumors off major organs.

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  6. 19094

    The scientists in this article may want to adapt their solar concentrator for a more prosaic use: cooking. In the early 1970s, I was involved in a project to build a self-sufficient dwelling that drew solely on the wind and sun for its power. We looked into using fiber optics to transmit solar energy to […]

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  7. Physics

    Prize honors physicist with conscience

    Physicist-author Freeman J. Dyson received the Templeton prize for originality in advancing religious understanding.

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  8. Physics

    Four ions mingle in quantum chorus

    A new way to produce mysterious quantum correlations among particles ups the record to four particles linked, or entangled, and opens the door to correlating many more particles on cue, a prerequisite for making quantum computers.

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  9. Chemistry

    Sweet tooth is in the genes

    Taste researchers have narrowed the search for the sweet tooth gene, at least in mice, to a 100-gene region.

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  10. 19093

    Cornell University entomologist Jeffrey G. Scott sees a cockroach contraceptive as still being a long way off. He may wish to investigate such a product that has been very effective and on the market for years. I can personally attest to its effectiveness. The common “flea bomb” that one gets from a veterinarian–the kind that […]

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  11. Chemistry

    Birth control for male cockroaches

    Scientists have discovered a gene in German cockroaches that may lead to a new type of insect control—contraception for male cockroaches.

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  12. Chemistry

    Coming up roses in scent research

    Aroma chemists have discovered a carotenoid-processing enzyme that makes the chemicals that give rose oil its smell.

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