Imagine that you roll out of bed onto a living fungus floor. The walls and ceiling — heck, the whole apartment building, down to the plumbing and electrical systems — are made of fungus too. Wood and concrete are remnants of the distant past; this entire city, from the schools to the stores to the hospitals, is made of living fungus — constantly growing, dying off and regenerating itself.

That’s the vision laid out in a provocative new paper, which a team of European academics say is the first-ever exploration of living fungus’ potential as a raw material for futuristic, eco-friendly “monolithic structures” that would, in their telling, revolutionize the entire built environment and economy.

“We propose to develop a structural substrate by using live fungal mycelium,” reads the paper. “Fungal buildings will self-grow, build, and repair themselves.”

The idea is a response to the prospect of catastrophic climate change. Growing our building materials from biological materials, the theory goes, would make construction less dependent on fossil fuels and environmentally-destructive mining operations.

“Fungal materials can have a wide variety of mechanical properties ranging from foam-like to wood-like to polymer-like to elastomer-like,” Han Wösten, a microbiologist at The Netherlands’ Utrecht University who co-authored the not-yet-peer-reviewed paper, told Futurism. “The fact that we can make wood-like materials implies that we can use it for the building industry.”

Along with other forms of living materials, fungal architecture is not a new idea — other research groups have explored the idea of growing building materials out of mycelium. NASA, for instance, is currently testing whether fungus could grow in Martian soil, potentially giving the space agency a low-cost way to grow space habitats onsite.

But those projects all involve killing the fungus after it grows, a process that makes it sturdier as a building material that the team says has already been used for load-bearing structures or boundary walls.

So far, they say, no one else has explored the possibility of building monolithic structures out of living fungus.

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