Paper strikes back: defending books, mail and paper money

Crumple it, drench it, lock it in a hot attic or a damp cellar but paper can come back to life. It is doing so now, after taking a battering from environmentalists, the Internet and a glum economy. Paper partisans are pushing back, defending greenbacks as preferable to dollar coins, physical mail as hacker-proof and turning-page books as more permanent than digital formats.