There is nothing that say you have to throw it away or that it could not be used
just like a book which you might not throw away.
But even if you did ONE piece of paper could replace an entire newspaper and might last a week. So instead of tossing 200 or more large pieces or paper you toss one.
Here is the
sciencedaily.com release. It says about the same but has links to other related items of interest.
The upside is that it could be wall paper... The down side is that it could be on billboards and in store windows.