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Neat selection of eco-product prototypes, pictured here, a solar powered bottle sorter –

The assignment was wide open: Design something based on the principles of reduce, reuse and recycle, and develop it into a prototype product. The results ranged from simple mechanical devices to complex electronic machines, but all served that central purpose in original ways.

To meet the challenge, seven teams of 18 students in this year’s 2.009 Product Engineering Processes class, taught by David Wallace, came up with a wide variety of ingenious ideas, which they presented last week at a packed session attended by about 150 outside engineers and product developers.

Students unveil eco-product prototypes – [via] Link.