Search Results for: Forests

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5,538 results

5,538 results for: Forests

  1. All kinds of tired

    Donkeys sleep about three out of each 24 hours. Certain reef fish spend the night moving their fins as if swimming in their sleep. Some biologists argue that all animals sleep in some form or another. But identifying sleep can get complicated. Insects have brain architecture so different from humans’, for example, that electrophysiological recordings […]

    By Susan Milius

  2. A partnership apart

    DNA in hand, scientists dissect and redefine the iconic lichen mutualism.

    By Susan Milius
  3. Physics

    Invisibility Uncloaked

    In the race to make things disappear, scientists gain ground on science fiction.

    By Charles Petit

  4. Aping the Stone Age

    Chimp chasers join artifact extractors to probe the roots of stone tools.

    By Bruce Bower

  5. Botanical Whales

    Adventures in the Tortugas reveal that seagrass fields need saving too.

    By Susan Milius
  6. Humans

    2009 Science News of the Year: Humans

    An artist’s illustration shows how a female Ardipithecus may have looked. An analysis of Ardi’s bones, uncovered from 1992 through 1997, was released this year. Credit: J.H. Matternes Ardi puts new spin on hominid evolution A 4.4-million-year-old partial female skeleton discovered in Africa, along with fossils from at least 36 of her comrades, provide the […]

    By Science News
  7. Life

    2009 Science News of the Year: Life

    Breeding records for sheep on Hirta offer an unusual opportunity to study inheritance. Image Credit: Arpat Ozgul Gentler winters shrink sheepWarming has trumped the benefits of fat to shrink sheep on the remote North Atlantic island of Hirta, a new analytical approach has revealed (SN: 8/1/09, p. 12). Weights for wild female Soay sheep dropped […]

    By Science News
  8. Earth

    2009 Science News of the Year: Environment

    Recent monitoring (from a gondola in Washington state, shown) reveals that rates of tree death are up. Credit: Univ. of Washington Routine tree deaths doubled Small background rates of everyday tree death have doubled in old-growth, western forests since 1955, possibly because of climate change, researchers report (SN: 2/14/09, p. 8). In 76 plots with […]

    By Science News

  9. Evolution’s Bad Girl

    Ardi shakes up the fossil record.

    By Bruce Bower

  10. Starting Anew

    Scientists turn to lowly creatures to unlock the secrets of regeneration.

    By Susan Gaidos
  11. Plants

    Losing life’s variety

    2010 is the deadline set for reversing declines in biodiversity,  but little has been accomplished.

    By Susan Milius
  12. Earth

    A fresh look at Mount St. Helens

    Nearly 30 years after the peak’s major eruption, recovery has just begun.

    By Sid Perkins