Corona announced they'll be the first global beer brand to trial 100 percent plastic-free six-pack rings. (Business Wire) At a Glance Beer companies are finding new ways to create environmentally friendly can holders.Companies like Corona, Carlsberg and Saltwater Brewery are experimenting eco-friendly alternatives. The next time you walk into your local grocery store and reach into the cooler to grab your favorite six-pack of beer, you might find something odd staring back at you. Beer companies like Corona, Saltwater Brewery...