The spiral pine needle stove is one of the projects developed in this class. Pine needles can be a plentiful and energy-dense fuel, but their burn is difficult to control, and produces health-threatening gases. The elongated spiral burn path helps this stove use the energy in the gases to get a clean, efficient burn. (Courtesy of the students on the Spiral Pine Needle Stove team. Used with permission.)
Choosing Purposeful Alignment: The Messy Middle of Transformation
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Inteligencia Emocional 2.0: 6 Libros [Emotional Intelligence 2.0: 6 Books]: Cómo Analizar a Las Personas, Autodisciplina Para el Éxito, Eliminar el Estrés, Autoconfianza y Autoestima, Manipulación y Psicologia Oscura Domina Tu Mente [How to Analyze People, Self-discipline for Success, Eliminate Stress, Self-Confidence and Self-Esteem, Manipulation and Dark Psychology Dominates Your Mind]
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