USA TodayIn an age of drones, robots and virtual reality, Starbucks is sponsoring a challenge aimed at revolutionizing a decidedly low-tech product — the paper coffee cup. The coffee giant is hoping scientists, chemists or just everyday tinkerers and thinkers can come up with a cup that's compostable, breaking down in a way that it basically disappears from the waste stream, or one becomes a component in another product. The problem isn't just the paper, but the cup's waterproof lining. Read more from USA Today. Read more on NewsOK.com