(Image credit: Apartment Therapy )
Brand new, very interesting and green: hand silkscreened wallpapers using water based inks, without chemical treatments and on recycled paper by artist Geoff...

... McFetridge for Pottock. Currently offered in triple rolls, each single roll is 15 feet long and most are 27" wide. A few of the patterns:

(Image credit: Apartment Therapy )
Little Whales
(Image credit: Apartment Therapy )
Shadows of the Paranormal
(Image credit: Apartment Therapy )
Flowers
(Image credit: Apartment Therapy )
Lines Forest
(Image credit: Apartment Therapy )
Apples
(Image credit: Apartment Therapy )
All of Us

More info: Pottock
Available through: Walnut Wallpaper