If you are in the market for flooring, you might consider natural linoleum. Made from linseed oil (hence the "lin"), natural linoleum, unlike vinyl "linoleum" is good for both you and the environment. These days, it is also rather artsy. Unfortunately, all this comes at a cost. There are two sources that I know of. Armstrong's Marmorette and Forbo's Marmoleum.
Marmorette is made from "linseed oil, powdered cork and other organic materials". Marmoleum is made of "linseed oil from specially cultivated Canadian flax, wood flour from European trees, rosin tapped from Portuguese pine trees, jute from India and Bangladesh and very finely ground limestone". Natural linoleum is non-allergenic, comes in a lot of fun colors (150+ for Marmoleum!), and lasts 25 to 40 years after which it is completely biodegradable. I found Marmoleum online from Green Building Supply for $31.49 per sq yd. You'll need to buy the special adhesive as well, which runs $123.60 in 600 sq ft/4 gallon increments. I wonder if you can do stairs. I expect installation to come at a premium, though with Marmoleum click, you can do it yourself.
Marmoleum click is a Marmoleum laminate on HDF panels and cork. It incorporates Marmoleum and the subfloor system in a single product, and can be installed on almost every type of floor.
"Although considered 'natural,' linoleum poses a significant environmental burden." That said, it is not as bad as "evil vinyl flooring". Hmmm.
"Since its a natural product with a high wood pulp and linseed content, its not as sound reflective as hardwood flooring. The product is available as sheetgoods or tiles. Seams can be heat welded to create a liquid-impervious floorcover. Colors and shapes can be mixed/cut in togther to create some amazing looks...see the photo attached below for the "area rug" look we created in the VCU Commons ballroom. If you are a regular "This Old House" viewer, then you saw it used as kitchen/ mudroom flooring in the fire-damaged renovation last year. Maintenance can be as easy as autoscrubbing and burnishing or you can apply a sealer/finish for a harder, glossy look."