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Ryan Bradley via

They created a 15-by-20-by-5-foot vinyl-and-nylon landing pad that contained two inflatable chambers. The upper chamber was sealed, while the four-foot-high lower chamber had valves that released a controlled amount of air on impact.

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Rena Marie Pacella via

an 8.8-ounce handheld gadget that uses inkjets, computer-mouse-like optics and navigation software to print uploaded images and text on any flat surface, including paper, plastic, wood and even fabric.

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Lauren Aaronson via

Prosthetic hands typically come in three varieties: purely cosmetic models; hooks and other low-cost that provide a limited range of motion; and electronic versions that better mimic natural hand movements yet can cost tens of thousands of dollars.