Abstract: A method for interactive education includes publicly broadcasting an educational program at a first time, inciting a user to record the educational program, inciting a student to view the educational program at a second time later than the first time, inciting the student to use a computer processor and an information connection to log into an education server, and inciting the student to input information regarding the educational program into the education server.

Abstract: A method of transferring waste water includes providing a hydro-powered fluid transfer device, the device including a fluid exhaust, a conduit configured to transfer fluid from a wastewater treatment facility to the exhaust, and a fluid accelerating device located adjacent to the fluid exhaust and configured to accelerate fluid past the fluid exhaust. The fluid accelerating device is approximately shaped as a portion of a cone. The method includes inserting the fluid exhaust and the fluid accelerating device at a location in a body of water having a current, whereby current flowing through the fluid accelerating device induces a suction that causes waste water to flow from the wastewater treatment facility to the fluid exhaust.

Abstract: A hydroelectric power plant includes a fluid intake, a fluid exhaust, a fluid engine located in a fluid path between the fluid intake and the fluid exhaust, and a fluid accelerating device located adjacent to the fluid exhaust. The fluid accelerating device is configured to accelerate fluid past the fluid exhaust and is approximately shaped as a portion of a cone.

Abstract: A hydroelectric power plant includes a wedge having a fluid intake, and a fluid engine located in a fluid path between the fluid intake and a fluid exhaust. The wedge may include at least upper and lower surfaces, the upper and lower surfaces angled with respect to each other by at least approximately 15°, and the wedge may be shaped to receive a fluid flow in the fluid intake.

Abstract: A hydroelectric power plant includes a wedge having a fluid intake and a fluid exhaust. and a first fluid engine inside the wedge and located between the fluid intake and the fluid exhaust in a fluid path inside the wedge. The wedge includes at least upper and lower surfaces, the upper and lower surfaces angled with respect to each other by at least approximately 15°. The wedge is shaped to divide a fluid flow into at least first and second flow portions and to receive at least a portion of the first flow portion in the fluid intake.