Glass recycling is less efficient than many other forms of recycling, due to the processing required to return glass to a usable, raw state. According to the EPA, recycling glass only saves about 30 perfect of the energy cost of producing new glass, and the raw materials required are in abundant supply. Reusing glass bottles and jars, however, requires no energy whatsoever, so you can reduce energy costs by finding new uses for these containers instead of simply throwing them out. Once you throw glass out, 1 million years will pass before that glass breaks down at the landfill.