Why it works
Not every material advertised as green can withstand the calculation.
Not every supposedly sustainable material stands up to the calculation; some have an impact primarily through their marketing, not through their numbers. Without comparison based on real CO2 values, the choice of material remains a gut decision that is difficult to justify later, especially to investors with sustainability requirements. A reliable comparison also protects against supposed alternatives that save money in one place but create new CO2 emissions in another place.
