If you have never seen the Northern Lights in person, or if you just want to see them again, increased solar activity is causing the best aurora borealis displays that the Earth has experienced in years. Since the 2011/2012 winter the Northern Lights have been more spectacular than ever. The 2013/2014 winter produced more of the same and the 2014/2015 season is predicted to have peak activity levels, too. This increase in activity is caused by what scientists are calling a 'solar flip'.