[0]https://twitter.com/Paul_Denney/status/1397132479144812544
[1]https://www.punchline-gloucester.com/articles/aanews/glouces...
Graphene has its own set of problems. Namely, it can be toxic to humans. [1] And who knows what massive quantities of graphene in concrete will do to an environment 10-20 years after the building's construction. Even demolition with explosives will probably be problematic due to potentially massive clouds of nanoparticles it could create.