A common design looks like a high tunnel.Unlike a greenhouse, which uses a heating system, a hoop house is heated by the warmth of the sun.

VOA: special.2009.12.22

Also,he did not like to compromise his design ideas to satisfy a buyer's wishes.

VOA: special.2009.12.13

He explains that businesses such as Nuru Design are examples of what a "green economy" would be like.

VOA: standard.2010.02.24

Like a jigsaw puzzle, each medal is a piece of the master design.

VOA: standard.2010.02.16

Atwater and his colleagues have made prototypes of the design in the lab, and the product doesn't look like the typical solar panels you might see on top of a building.

VOA: standard.2010.02.19