Wooden solar windturbine toy.
Learn the science behind the power!. The Enviro Battery uses natural materials like mud, lemons and water to power a light bulb, a watch, and activate a music chip.
Build real working miniature models of a solar oven and a solar water heater.
The Original EcoSphere® is the world's first totally enclosed ecosystem -
The Original EcoSphere® Enclosed Microsystem with Live shrimps
The Original EcoSphere® is the world's first totally enclosed
The Original Medium Size Pod-Type EcoSphere is the world's first totally enclosed Ecosystem