NOVA - Magnetic Storm
List Price:
Our Price: $8.49
You Save: $11.42 (57%)
Availability: Usually ships in 1-2 business days
Buy Used: from $1.49 (click here)
Category: DVD
See more DVD releases
Buy this DVD movie at online store in your country
Canada
Canada
DVD Cover Information
Brand: Wgbh WholesaleDVD: Region Code 1
Audio: English (Unknown); English (Original Language)
Format: Closed-captioned, Color, DVD, Letterboxed, NTSC
Running Time: 60 minutes
Published: 2004-02-01
DVD Release Date: 2004-02-17
Audience Rating: NR (Not Rated)
Studio: PBS
Movie Reviews of NOVA - Magnetic Storm
Movie Review: Grabbed My Attention!
Summary: 5 Stars
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.
Summary of NOVA - Magnetic Storm
What is weakening Earth?s invisible shield? Magnets have the power to attract and repel?sometimes on a massive scale. The Earth?s molten core?a violent mix of searing heat, crushing pressure, and a billion trillion tons of liquid iron?creates an invisible shield that surrounds the globe, guarding against a constant barrage of deadly radiation from space. But over the last few decades, the Earth?s magnetic field has weakened dramatically, intriguing scientists across the globe.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.
Similar DVD Movies
Into the Universe With Stephen HawkingGaiam; Release date: 2011-01-04; DVD
Best price: $4.98
Price in other shops:
NOVA: Solar Energy - Saved by the SunWgbh Wholesale; Release date: 2007-07-31; DVD
Best price: $9.63
Price in other shops:
NOVA: Newton's Dark SecretsWgbh Wholesale; Release date: 2006-02-28; DVD
Best price: $7.49
Price in other shops:
How the Universe WorksGAI; Release date: 2011-06-28; DVD
Best price: $11.98
Price in other shops:
Inside Planet EarthImage Entertainment; Release date: 2009-08-25; DVD
Best price: $9.00
Price in other shops:
NOVA: Fractals - Hunting the Hidden DimensionWgbh Wholesale; Release date: 2009-03-10; DVD
Best price: $10.48
Price in other shops:
Absolute Zero - NOVAWgbh Wholesale; Release date: 2008-06-03; DVD
Best price: $12.37
Price in other shops:
Nova: Fabric of the CosmosNova; Release date: 2011-11-22; DVD
Best price: $13.99
Price in other shops:
NOVA - The Elegant UniverseWgbh Wholesale; Release date: 2004-01-20; DVD
Best price: $7.63
Price in other shops:
NOVA - Lightning!Wgbh Wholesale; Release date: 2004-06-29; DVD
Best price: $8.49
Price in other shops: