The Museum of Scotland is filled with wall paneling, display cases and furniture comprised of “Euro ZF,” a formaldehyde-free (less than 1 mg per 100 grams) MDF produced in the company's Clonmel, Ireland, plant. The exclusion of formaldehyde was important to the museum because artifacts are said to be vulnerable to the smallest amounts of air pollution. (503-227-5581; Internet: www.wii.com)