Comments by "Diana Pennepacker" (@dianapennepacker6854) on "The big problem with cement, and how to fix it" video.

I always hear the reason why concrete doesn't last as long as say... Some roman concrete. (Not just due to the use if limestone.). That rebar is the culprit on why our concrete lasts only for so many decades instead of centuries. So if we could build to last like our ancestors. We wouldn't be using as much. Make a building last for the ages! (Also easily recyclable.). I mean couldn't we reinforce it with something that is even more durable as steel while maybe being weaker, but more durable against the forces that generally degrade it. Along with modern self healin, carbon tradable, concrete techniques. I want to see mega buildings where you could literally live your entire life in one. Has everything from a bakery, butcher, restaurants to banks and doctors. Have skyways to go a neighboring building. Those new magnetic elevators that can go in multiple directions in the X, Y and Z axis.
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