DVDs:

	NOVA - Magnetic Storm WGBH Boston, 2004 average customer review:based on 9 reviews view larger image
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highly recommended

The power generated 2000 miles beneath our feet protects us every day, but the loss of Earth?s magnetic field is a brewing storm that affects us all. While experts research and debate, persistent questions remain. Is a rare geomagnetic reversal the cause of earth?s inner turmoil? And if the magnetic field were to vanish altogether, would Earth become as lifeless as Mars?

Travel from Hawaii?s molten lava flows to the mountains of Oregon and into the far reaches of outer space for a charged look at Earth?s magnetic history and potentially deadly future.

Special DVD features include: materials and activities for educators; a link to the NOVA Web site; scene selections; closed captions; and described video for the visually impaired.

On one DVD5 disc. Region coding: All regions. Audio: Dolby stereo. Screen format: Letterboxed.

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Awesome

I had seen part of the Magenetic Storm months ago on KQED. It is an amazing story about magnetic polarity of the earths core. It also gives you an better uderstanding of global warming, in directly. Very educational!


Great scientific documentary

I enjoyed watching this DVD and learn a lot from it.
Thanks to NOVA. A great contribution to the public and people who are curious about the science.


Truly a magnetic show

A marvelous collection of current research on the Earth's magnetic field. The only video I have that other science teachers keep borrowing and borrowing. It starts with reasonable questions about the possible disappearance or change of our magnetic field and clearly and logically follows the chain of research up to what we know in the current day. The use of ancient pottery, Hawaiian lava, the Royal Navy, and other compelling evidence ends with a clear and understandable picture of our current understanding. The final questions and possible futures it ends with have been starting points for some great discussions. In a decade or two research might make this show outdated, but it is currently wonderful.

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Grabbed My Attention!

The electromagnetic field of earth explains why earth's atmosphere has remained stable while Mars has lost most of it's atmosphere. It also surprises in that our North and South Poles switch places over a relatively short cosmic period of time - 200,000 years, and that we are now experiencing a rapid change with the predicted reversal in 300 years. This is a fascinating detective story that started with data from Mars showing that it had an atmosphere and water at one time, but why did it disappear? Rocks on mars showed it had a magnetic core about 4 billion years ago, but that it solidified and Mars electromagnetic field disappeared with the water and atmosphere.

From this the mystery of whether Earth will lose its field or not is solved using surprising sources. Clues from ancient clay-fired pottery, volcanic rocks, 300 year old ship logs, and many other pieces of data are put into NASA and Government computers for 6 months of processing to find that we will not lose our life-saving shield for hundreds and thousands of years, but it will continue to shift. Why it shifts is not answered, nor what happens with weather, global warming. They think there will be more "Northern" lights displays all over the world and a slightly higher incidence of cancers during the shift.

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Interesting and good enough for me

I found this DVD by incident. Since there are not so many DVD's about this topic, I just bought it out of curiosity and am happy I have done that.

This film discusses about the fading of the magnetic field of the Earth. It turns out to be a reversal: the north and south poles will flip every 200,000 years in average. Fading is just part of the process, not the result. and we are just being in this process. The reason, however, is not well explained in this film. They just said scientists put many factors into consideration and form many equations to have been solved by a super computer. If you are a hard-core technical fan, this is what will disappoint you.

Despite of this, the other parts are quite abundant, entertaining and educational. This topic can be related to the dying of the Mars, ancient potteries, lava rocks from volcanoes and even the Royal Navy's logs. In addition, the importance of the magnetic field is also emphasized.

Overall, this film is well made and it is relaxing to watch.

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reviews: page 1, 2

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