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recircle
Recircle - Flying saucers have always been the vehicles of choice for aliens. Crop circles are unexplainable patterns found in the field assumed to be made by flying saucers.
The flying saucer would appear without any prior notice, stay for a period of one month. During its tenure, it teaches the skills of landscaping and recycling to the local youth, create an awareness about the environment and then disappear leaving a landmark of its own like a crop circle.