Don't panic or anything, but apparently the earth is getting set for one of its periodic reversals in its magnetosphere.
Rapid changes in the churning movement of Earth's liquid outer core are weakening the magnetic field in some regions of the planet's surface, a new study says. "What is so surprising is that rapid, almost sudden, changes take place in the Earth's magnetic field," said study co-author Nils Olsen, a geophysicist at the Danish National Space Center in Copenhagen. The findings suggest similarly quick changes are simultaneously occurring in the liquid metal, 1,900 miles (3,000 kilometers) below the surface, he said. The swirling flow of molten iron and nickel around Earth's solid center triggers an electrical current, which generates the planet's magnetic field. [...] The changes "may suggest the possibility of an upcoming reversal of the geomagnetic field," said study co-author Mioara Mandea, a scientist at the German Research Centre for Geosciences in Potsdam. Earth's magnetic field has reversed hundreds of times over the past billion years, and the process could take thousands of years to complete.
No word yet on whether or not the government is secretly planning a mission to the center of the planet to detonate a few nukes.
It's widely known and supported in the scientific community that the magnetosphere protects the planet from the harmful radiation produced by the sun. So, when you combine this decrease in the strength of the natural deflector shield with increased solar activity, isn't it possible that presto!--you've located the real source of global warming?
Oh, and my guess as to the date of the actual polar shift? How about December 21, 2012?