Sustainability is a topic that’s extremely important to people throughout the world. And young people, particularly Millennials and Gen Z, are very focused on the subject. That makes sense since they have the most to lose if we don’t get ahead of the plastic and paper waste issues we have. One way that people are embracing sustainability is through the use of refillable products. And major retailers, including Walmart and Target, are experimenting with refilling stations in their stores. They’re very popular where they’re in use, and some are willing to pay more to help the planet. That’s music to the ears of some companies…