Joanne,

Info on Adobe constructions including Adobe bricks, roofs, etc -

http://en.wikipedia.org/wiki/Adobe

Info on Ceramic houses -

http://en.wikipedia.org/wiki/Ceramic_houses

Info on Earthbag houses -

http://www.greenhomebuilding.com/earthbag.htm

Bamboo - you have heard right, bamboo is a good resource for furniture, and is also used in some regions in house constructions also.