Examining the Earthlight Theory looks microscopically at the Tectonic Strain Theory of UFOs. The author uses the Yakima data (nearly 200 reports from a variety of witnesses, plus
numerous color photographs) to test the viability of the Tectonic Strain Theory which Persinger believes explains the Yakima sightings.
The Yakima data form a "microcosm," a fascinating, self-contained world of strange reports, which include a range of unexplained occurences - orange balls of light, CE3's, possible abductions, Bigfoot sightings, daylight objects, subterrrean sounds and more. Nearly every part of the reservation experienced some type of unexplained event over a 20 year period, making the Yakima Indian Reservation an excellent "laboratory" for detailed examination of UFO phenomena. Earthquake faults mark the ridges of the reservation. It lies at the foot of the volcanic Cascade Range and fire lookouts were in place on top of three mountains to observe and record strange lights year after year. The right conditions for data collection, plenty of UFOs and more than enough meticulous documentation to whet the appetite of a curious scientist in serach of an explanation.
Examining the Earthlight Theory takes the reader on a historical journey, following the sightings to their most recent occurence. All data of this unique mini-flap are used to thoroughly evaluate the basic components of the Tectonic Strain Theory. Examining the Earthlight Theory is an experience in detective work, where all the facts of the Yakima micrcosm are weighed, sifted and evaluated in the systematic pursuit of a solution to the mystery of this microcosm.