Pretty much any manufacturing affects global warming in some way because it requires energy to produce, and usually produces pollution. Per tonne of glass produced, an estimated 2 tonnes of CO2 are produced. Glass has an embodied energy level of 15.9 Mj/kg, which is significantly more than brick, wood, and concrete. However, it is far less than steel, and aluminum, which often is what would replace the glass. Glass also naturally harnesses heat from the sun which helps with heating, reducing energy consumed from that. Therefore, glass most likely helps with global warming.
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