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NPR
npr.org
did:plc:ln72v57ivz2g46uqf4xxqiuh
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.
https://n.pr/4wMmvw2
2026-05-24T13:28:41.767Z