At some point in your life, a coach may have enthusiastically told you to "fight fire with fire." Coach, of course, was speaking metaphorically. Do firefighters actually employ this strategy?
If you've ever spied a night sky splashed with vivid billows of color, either you have access to interesting drugs or you've seen an aurora firsthand. If it's the latter, your sky-gazing probably took place during spring or autumn. How come?