Earthquake Lights:
http://geology.about.com/od/earthquakes/a/EQlights.htm

earthquake.usgs.gov: Q&A:
What Are Earthquake Lights? Are They Real?
http://earthquake.usgs.gov/learning/faq.php?categoryID=8&faqID=103

Michael Persinger vs Paul Deveraux on unusual aerial lights: http://www.absoluteastronomy.com/topics/Michael_Persinger

In the book
Earth Lights Revelation: Ufo's and Mystery Lightform Phenomena The Earth's Secret Energy Force
Paul Deveraux postulates the source of these lights is a new form of energy.

From the book Subtle Energy by John Davidson [CW Daniel Company 1988]p. 92:
Ball Lightning and Particle Spin: The research of Dr. Geert Dijkhuis, director of a Rotterdam based company, has centered on the artificial creation of ball lightning. He was able to produce a 10cm ball lasting 1 second, and wants to increase the time duration.