Archive for the ‘Natural’ Category

  • Floods: The Human Role

    Flooding. We call it a natural disaster. But humans have a role. How do people promote flooding by cutting trees, draining wetlands, paving parking lots and otherwise interfering with nature?


    Thursday, March 16th, 2000
  • Asteroid Threat

    How bad is the asteroid threat to Earth, and what are they doing to find any killer asteroids out there? Read the delightful debate between the no-problem and the killer-asteroid schools of thought.


    Thursday, March 2nd, 2000
  • Avalanche Attack

    What causes avalanches? Why are they so dangerous, and how can you avoid them without cowering at home?


    Thursday, February 17th, 2000
  • Killer Asteroids: Ultimate Impact

    New searches are finding lots of asteroids. None of them are aimed at us — yet. How much damage have asteroids done in the past?


    Wednesday, November 4th, 1998
  • Tsunami Times 3

    As coastal populations continue rising around the world, we wonder about the history of tsunami assaults on humans. What causes these titanic waves, and what can we do to reduce their deadly impact?As coastal populations continue rising around the world, we wonder about the history of tsunami assaults on humans.


    Thursday, July 30th, 1998
  • Ticks Take Toll: Meet a Persistent Parasite

    Consider the tick. This parasitic insect lives a revolting life, sucking blood from mammals for a living and carrying pathogens that cause illness — Rocky Mountain spotted fever, Lyme disease, and now human granulocytic ehrlichiosis (HGE). You just can’t say anything nice about ticks.


    Wednesday, May 7th, 1997


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Image courtesy of Pete Mouginis-Mark, Hawaii Institute of Geophysics and Planetology, University of Hawaii at Manoa

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