Climate change is caused by the emission of carbon dioxide into the atmosphere, a greenhouse gas that traps heat and makes the earth warmer. Greenhouse gas is produced from the burning of fossil fuels, which are buried remains of plants and animals that lived millions of years ago. Burning fossil fuels is the largest driver of global climate change. Fossil fuels include petroleum or crude oil, coal and natural gas. Examples of the largest fossil-fuel uses include production of heat and electricity (energy), combustion-based transportation, and the production of cement and steel. Seventy percent of steel is made from coal, the most carbon intensive fossil fuel burned. Steel is the primary construction material in buildings and infrastructure, consuming half of steel production. Current data indicate that carbon emissions reduction is most urgent in the building construction industry. The construction industry produces 38% of today’s global carbon emissions, the largest carbon dioxide contributor of all industries. Of that 38%, 10% of the emissions are attributed to construction materials made from steel, concrete and glass. The construction industry steel demand is linked to construction materials including concrete, walls, roofs, insulation, heating, cooling, and ventilation (HVAC) equipment, ductwork, stairs, piping, bridges, cabling, tar, tunnels and railroads. Traditional building insulation embodies carbon emissions adding up to 50 years to a building’s carbon footprint. One of the simplest and most cost effective ways to decarbonize the building construction industry is through our building insulation practices.