SETI public: Fw: [NOVA] "Magnetic Storm"

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----- Original Message -----
From: owner-nova-online_at_franz.wgbh.org
Sent: Friday, November 14, 2003 5:48 PM
To: nova-online_at_franz.wgbh.org
Subject: [NOVA] "Magnetic Storm"

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NEXT ON NOVA: "Magnetic Storm"

http://www.pbs.org/nova/magnetic

Broadcast: November 18, 2003
(NOVA airs Tuesdays on PBS at 8 p.m. Check your local listings as
dates and times may vary.)

On March 13th, 1989, the lights went out all across Canada and the
eastern seaboard of the United States as far south as New York. The
most serious power grid failure in American history was caused by a
magnetic storm in the Earth's upper atmosphere, itself triggered by
the eruption of a huge flare from the surface of the Sun. Unusual as
this event may seem, many scientists today are beginning to worry
that it may be a harbinger of things to come, and that changes to
the planet's magnetic field could make us ever more vulnerable to
deadly radiation from space.

Here's what you'll find on the companion Web site:

Inquiry and Overview

      Impact on Animals
      Would a dramatic change in the Earth's magnetic field affect
      creatures that rely on it during migration?

      When Compasses Point South
      As this time line shows, our planet's magnetic shield has
      reversed its direction hundreds of times.

Slide Show and Interactive

      Gallery of Auroras
      Auroras like those displayed here would be visible every
      night of the year during a magnetic field reversal.

      See a Reversal
      Watch a simulated flip of the Earth's magnetic field, from the
      first signs of instability to the final reversal.

Resources

      NOVA News Minutes
      Watch a news clip related to the program (available 11/18)

      Plus, a list of links and books, a teacher's guide, and the
      program transcript

http://www.pbs.org/nova/magnetic

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• Previous message: LARRY KLAES: "SETI public: Fw: Returning Sunspots"

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