Some used natural materials like wood on the outside of the house for a pleasing appearance.

VOA: special.2009.10.27

Some materials are available free at Web sites like the Purdue Online Writing Lab,or OWL.

VOA: special.2010.02.11

The car is made mainly of sustainable and renewable materials, like plants and vegetables.

VOA: special.2009.11.03

By the nineteen sixties, Dupont already had produced materials like nylon and Dacron.

VOA: special.2010.02.09

We will tell about a car made mostly from renewable materials,like plants.

VOA: special.2009.11.03

The conference will discuss groups like al-Qaida and how to prevent them from obtaining nuclear materials for bombs.

VOA: standard.2010.04.06

"The biggest thing was just like this paper airplane, it was a way that you can make something with found materials,cheap paper, scraps,even trash."

VOA: standard.2010.03.17