A stunning and extremely rare display of the aurora borealis (‘northern lights’) has been filmed in areas all across Europe, Canada, and the Western U.S. in the last 48 hours. As a phenomenon, the northern lights are usually confined to the globe’s northernmost areas, like Scandinavia, Iceland, and Greenland. However, this week’s display has been visible in areas much further south, due to what experts describe as a rare mix of solar and geomagnetic activity. | NowThis