Sid Perkins' Articles

  • News

    Satellites verify greenhouse-gas effects

    Comparisons of data obtained from instruments that orbited Earth more than 25 years apart provide direct evidence that the planet's greenhouse effect increased significantly between 1970 and 1997.
  • News

    Is there a vent in the global greenhouse?

    Satellite observations of ocean temperatures in tropical regions of the western Pacific suggest that when ocean temperatures there warm up, the amount of heat-trapping cirrus clouds decreases, possibly providing a heat-venting effect that could help reduce global warming.
  • Feature

    A Nation Aflame

    In the wake of one of the worst fire seasons in the past 50 years, scientists are assessing risk as more people move into fire-prone areas and developing ways to better predict the behavior of--and the potential for--wildfires.
  • News

    Extinctions Tied to Impact from Space

    Evidence trapped in 250-million-year-old sediments may help researchers pin the ultimate blame for the massive extinctions that occurred then on the impact of an extraterrestrial object about 9 kilometers across.
  • News

    Scientists develop self-healing composites

    Researchers have developed a composite material that has the ability to repair small cracks within itself, a characteristic that could be used to extend the reliability and service life of electronic and aerospace components.
  • News

    Siberian snow has long-range effects

    The strength of the winter weather feature called the Siberian high is linked to the amount of early-season snow cover in its namesake region.
  • News

    Lack of oxygen locks up peat's carbon

    The inactivity of a single enzyme in peat due to the lack of oxygen may be the only thing preventing massive releases of carbon dioxide from the peatlands.
  • News

    Did ancient superbees squash diversity?

    The recent discovery of several dozen extinct bee species in ancient amber deposits has led one paleontologist to propose that the very success of some bees' social lifestyle led to today's dearth of hive-dwelling species.