Scientists often warn us about change, asteroids or war. Now scientists have warned of the of Earth's magnetic poles reversing. The poles create the magnetic around Earth. This protects us from radiation. Life on Earth depends on this . The poles could flip in the thousand years because the molten iron turning around Earth's is changing . This molten iron is like a electromagnet.
Earth's poles flip every 250,000 years. The time was 780,000 years . The next flip could destroy communications and power grids; deadly solar could increase of cancer; and climate change could kill many . A polar flip could even blow Earth's away. One scientist dismissed the from increased radiation from the poles flipping. He said it would be as as lying on a for a day without wearing a hat.
