Permanent paper will last for several hundred years without significant deterioration. With a pH level of 7.5 or above, permanent paper grades are groundwood free with additional strength and performance properties that guarantee its use and retention for a maximum period of time. How does the acid get in the paper? The art of papermaking dates back several thousand years to around 3,000 BC, when paper was originally made from papyrus. Through the centuries and in different regions of the world, materials such as sheepskin, bamboo, silk, hemp and more recently, cotton rags took the place of papyrus.
[Warning: This story contains spoilers from Wednesday's Arrow, Eleven-Fifty-Nine.] Laurel Lance's (Katie Cassidy) death on Arrow may be controversial when it comes to the comic book source material, but her portrayer understands why Black Canary ended up in the flash-forward grave on The CW series.
As Cannes Film Festival came to end, there were surprises all round as the jury led by Joel and Ethan Coen gave Best Actress to both Rooney Mara, half of the romantic pair of Todd Haynes' `50s lesbian drama Carol, and Emmanuelle Bercot, the French star of the roller-coaster marriage drama My King.