Project Sea Tree will dramatically increase the production of power from the wind. The concept will harvest power from the wind using sailplanes tethered to a moving root. It advances a concept for a manned sail-craft propelled by the wind faster than any such existing vessel, and for harvesting more power from the wind than any existing device of the same size. Why Is Project Sea Tree Astounding? The power from this system using 67.4 square meters of wing area would exceed that from 26,409 square meters (over 61/2 acres) of rotor area in a horizontal-axis wind turbine. A land-vehicle version...