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Power plant on a kite

03.09.2002

Australian engineer Brian Roberts intends to get electricity from high-altitude air currents that blow constantly and at high speed. To do this, he is going to fly kites with a rotor, and the energy will be transmitted to the ground through three wires holding such kites on a leash.

The engineer has already received permission from the local aviation authorities to launch his design to a height of up to 1600 meters, but for now he is testing a reduced model at an altitude of about 120 meters.

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Styrofoam is a problematic material as it is cheap and lightweight, but is not biodegradable and difficult to recycle. However, German scientists have developed a possible alternative - popcorn foam.

Alireza Harazipour, a professor at George August University, first came up with the idea more than a decade ago when he bought a bag of popcorn at a movie theater. Since then, his team has developed a method to use this material as an inexpensive, biodegradable, renewable alternative to Styrofoam.

The manufacturing process begins with the mechanical crushing of corn kernels into granules and then expanding them with pressurized steam (or "explosion"). The vegetable protein binder is mixed with the expanded granules, after which the mixture is pressed into a mould. Once the binder has hardened, the resulting sheet, block, or other object is removed from the mold and is ready for use.

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