Climate Change Linked to Sun's Magnetic Field

-douggy writes "Found this story at Science daily - Assistant Professor of Earth Sciences at Dartmouth, examined existing sets of geophysical data and noticed something remarkable: the sun's magnetic activity is varying in 100,000-year cycles, a much longer time span than previously thought, and this solar activity, in turn, may likely cause the 100,000-year climate cycles on earth. Couple this with the fact that the climate (global temperatures at least) also mirror the sunspot cycle almost perfectly. Makes an interesting case for global warming really."