The giant, and seemingly perfect patterns that mysteriously appear on farmers' fields may be the result of physics, according to Richard Taylor.

UFOs and supernatural forces are off the hook.

Taylor, director of the Materials Science Institute at the University of Oregon, takes a serious, objective look at crop circles in this month's issue of Physic's World. He suggests that lasers, microwaves and global positioning systems (GPS) all play a role and have replaced the traditional rope, planks of wood and bar stools that had been used in the past.

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