PBS Nova - Magnetic Storm (2003) DVDRip XviD-DMZ
AVI | 700.0 MiB | 624x352 | XviD @ 1 721 Kbps | English | MP3 @ 112 Kbps - 2 channels | 52mn 50s
What is weakening Earth.The Earth molten core 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 magnetic field has weakened dramatically, intriguing scientists across the globe.