While the production of lab-grown leather can eliminate a major issue within the fashion industry, researchers from around the world have come up with a solution to an even greater environmental problem: Paper waste. According to the Paperless Project, the average office worker goes through 10,000 sheets of paper a year—45 percent of which ends up in the trash the same day they’re printed. This is incredibly wasteful, and has led researchers to develop a new type of paper that’s coated with nanoparticles so that it can be printed and erased again and again. The rewritable paper uses UV light to create text that natural fades away over five days, meaning that it doesn’t require a drop of ink to make. Best of all, it can be reused over 80 times.