Denver has a plan to heat and cool buildings without fossil fuels. It involves … sewage?
Like many cities, Denver's largest source of greenhouse gas emissions is its buildings. Heating and cooling skyscrapers requires a lot of fossil fuels. Now, the city is trying a surprising solution.
Like many cities, Denver's largest source of greenhouse gas emissions is its buildings. Heating and cooling skyscrapers requires a lot of fossil fuels. Now, the city is trying a surprising solution.
This article was originally published at: https://www.npr.org/2026/05/20/nx-s1-5734477/denver-geoth...