Most sodas are available in both plastic bottles and aluminum cans. Some manufacturers also offer glass bottles. If you're looking for the most eco-friendly option, aluminum cans that are made from 100% recycled materials are best. However, most cans have just 68% recycled materials.  If you must choose a newly manufactured container, glass is the best choice for the environment. Most glass bottles are made from 20-30% recycled materials, and the process of sourcing the materials used for glass is easier on the environment. Producing plastic bottles releases less carbon than making aluminum, but fewer plastic bottles are recycled, and a plastic bottle typically has just 3% recycled material. There's no clear cut answer on which option is best, but you can reduce your impact on the environment by recycling any container that you choose.