In our upstairs offices here at CAG, we installed cork flooring tiles. Cork is a wonderful, renewable resource for flooring since it cork is harvested from the bark and doesn't kill the tree. Cork can be harvested over and over throughout the lifetime of the tree.
The cork in our flooring is a bi-product of when they make corks for wine. Whatever is left over, they make into these flooring tiles.
Our flooring is also a bit more springy and makes a better insulator of sound over typical wood flooring.