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  1. Humans

    Talent Search: Student finalists’ flair for science to be rewarded

    A panel of judges announced the 40 finalists in the 61st annual Intel Science Talent Search.

    By Sid Perkins
  2. Plants

    Petite pollinators: Tree raises its own crop of couriers

    A common tropical tree creates farms in its buds, where it raises its own work force of tiny pollinators.

    By Susan Milius
  3. Astronomy

    Supernova dealt deaths on Earth? Stellar blasts may have killed ancient marine life

    The explosion of nearby supernova may have caused the widespread extinction of marine life on Earth 2 million years ago.

    By Ron Cowen
  4. Chemistry

    Viral parts: Chemists convert virus into nanoscale tool

    Researchers are decorating viruses with a variety of molecules, making the microbes into potential building blocks in electronic circuits and new materials, as well as tools in biomedical therapies.