Over the past few years i've seen green sheathing on newer homes but i've never found out exactly what it's called or what it is made of. If the following link works, it shows the newTOH italianate with this green sheathing. Anyone know the name, what it's made of and why it's better than good ol' plywood sheathing?

http://oldhousemyhouse.thisoldhouse....-the-rear.html