How big is the sun? Well, that depends on when you’re measuring. The sun slightly shrinks and expands as it goes through a solar cycle, a roughly 11-year period of high and low magnetic activity, a new study finds.
Oct 12, 2017· In Northern Minnesota, Two Economies Square Off: Mining vs. Wilderness. Proposed mines near the Boundary Waters have become the latest front in the fight over who gets to profit from America’s natural resources.