This bench concept entitled A Piece of Earth was created by Studio Origins in a collaboration with other designers. It combines grass and wood to make a comfortable-looking chair and day bed. The grass' natural cooling effect is apparently very noticeable and perfect for hot and humid climates.
This line of furniture was created with the intent to turn the best of nature into furniture. It was originally showcased at Platform 2008 and, while initial feedback and reaction was very positive, concerns over grass maintenance, soiled clothing and drainage were of concern (which we can understand). We do love the idea, though!