A ball of fire moving mysteriously over a train track? Hmm....
Ball lightning bamboozles physicist › News in Science (ABC Science)
What is BALL LIGHTNING? | Why are Scientists so Afraid of it? - YouTube
Ball lightning is so strange it might just come from another dimension | New Scientist
Rare Ball Lightning Captured On Video - YouTube
Ball lightning - Wikipedia
Ball lightning is an unexplained and potentially dangerous atmospheric electrical phenomenon. The term refers to reports of luminescent, spherical... | By Discover Earth | Facebook
Medieval monk wrote a spot-on description of mysterious ball lightning - CNET