> The catch is that nobody can actually build a ladder strong enough. Yes, we've ruled out aluminum and wood. But don't give up! Got any single-crystal graph

> The catch is that nobody can actually build a ladder strong enough. Yes, we've ruled out aluminum and wood. But don't give up! Got any single-crystal graphene? That might work! https://www.azom.com/article.aspx?ArticleID=16371 https://www.azom.com/article.aspx?ArticleID=16371