Architecture is one of the largest culprits of carbon emissions in the U.S., thanks to construction and building upkeep. While new technologies and passive design are helping to make a difference in individual houses, implementing the solutions on a large scale remains a challenge.

Fast Company's Shaunacy Ferro has rounded up seven building solutions, ranging from a perforated concrete exoskeleton to help vent hot air to pavilions constructed out of recycled milk cartons, that could help tackle climate change.

The projects address local concerns, but in a warming world, are applicable on a wider scale—innovations like algae that can boost a sinking city, concrete plazas that reflect heat to keep temperatures cool, and skyscrapers that passively combat heat.

Take a look at the full article over on Fast Company.