Glass can be sustainable through various methods aimed at minimizing its environmental impact throughout its lifecycle. Biophilic design principles can be incorporated into glass manufacturing, enhancing its sustainability by promoting connections to nature and improving occupants' well-being. Insulation solutions, such as low-emissivity coatings or gas-filled cavities in double-glazed windows, can improve energy efficiency by reducing heat transfer, thereby decreasing the need for heating and cooling. Additionally, double-glazed windows provide enhanced thermal insulation compared to single-glazed ones, further improving energy efficiency and reducing carbon emissions associated with building operations. Integrating these approaches can make glass production and usage more sustainable by conserving resources, reducing energy consumption, and enhancing indoor environmental quality.