Feature

  1. Ecosystems

    Prairie Revival

    Prairie restoration is attracting interest, but because so little long-term monitoring and comparative studies have been done, researchers are still wondering whether it's really possible to re-create a prairie.

    By Leslie Allen
  2. Agriculture

    Lettuce Liability

    A new industry program to self-regulate most salad producers is forcing affected farmers to choose between adopting measures unfriendly to wildlife and a loss of major markets for their greens.

    By Janet Raloff
  3. Archaeology

    Muons Meet the Maya

    Physicists are exploring the use of muons generated by cosmic rays to explore Mayan archaeological sites and to probe the interiors of volcanoes and shipping containers.

    By Betsy Mason
  4. Archaeology

    Rolling Back the Years

    Scientists are refining carbon dating techniques to make the archaeological timeline more precise.