In harsh and inhospitable environments, with hot days and cold nights, this invention creates a temperate and moist earthen nursery for protecting and nurturing seeds into trees with a self replenishing source of drip irrigation. It is a plant incubator thats designed to cool faster than the night air, creating condensation.
Click here for detail: http://cleantechnica.com/2010/05/29/inventor-uses-biomimicry-to-create-dew/