Search Products Shop by Category  Astronomy, Space  Batteries, Power Supplies  Biology  Books  Chemistry  Clocks, Watches  Crystal Growing  da Vinci Gear  Dinosaurs  Einstein Stuff  Electronics  Fun, Toys & Gifts  Games & Puzzles  Geology & Fossils  Glow-in-the-Dark  Laser Pointers  Light & Optics  Magnets  Microscopes  Physics  Posters, Postcards  Robots  Science Kits  Software & Videos  Solar Stuff  Study Charts  Telescopes  Videos (DVD)  Weather Instruments Shop by Price:  under $5  $5 to $10  $10 to $20  $20 to $50  $50 and up Shop by Age:  5 years old  6 - 7 years old  8 - 9 years old  10 - 11 years old  12 and older Store Info:  Catalog Request  Help / FAQ  Contact Us  Terms Of Use Order Tracking: Order No.: Password:		Cart items: 0 Total: $0.00     Magnetic Storm NOVA DVD »  Science eStore Home  »  Videos (DVD)  »  Magnetic Storm NOVA DVD click here for larger image This item makes a great gift! Price: $19.95 Sale Price: $18.95 each Item No: 11266 In Stock: 3 units in stock Ships same business day. Quantity:   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; closed captions; and video descriptions. On one DVD5 disc. Region coding: All regions. Audio: Dolby stereo. Screen format:Letter boxed. Series: NOVA Grade level: Grade 7+ Closed captioned: Yes 60 min on 1 DVD UPC # 783421 37 0098 ISBN # 1-59375-107-9 2003 Box Size: 7.50in (19.05cm) x 5.25in (13.34cm) x 0.50in (1.27cm) Recommended for ages 13 and older. Weight: 0 lb 4 oz ( 0.11 kg ) Related Products   Infinite Secrets NOVA DVD NOVA explores Archimedes' rare writings, as well as the book's mysterious beginnings, tumultuous history and amazing discovery. Item No: PL1279 $19.95 $18.95 /each  View/Buy   Dimming Sun NOVA DVD NOVA unravels this baffling climate detective story and follows the implications of the discovery for our planet's future. Item No: PL1267 $19.95 $18.95 /each  View/Buy   The Elegant Universe NOVA 2 DVD Set It's the holy grail of physics--the search for ultimate law and order in the universe. Item No: PL1258 $19.95 $18.95 /each  View/Buy
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