Roman concrete was remarkable because it could last for thousands of years, even underwater. Its mixture of lime, volcanic ash, and water allowed it to develop cracks that didnโt weaken it. When water entered a crack, it reacted with the lime to form calcium carbonate, which gradually filled the crack and bonded the concrete back together, essentially giving it a natural self-healing ability.
Itโs exactly One Year since Trump & America pulled obliterated & pulled out of The World Health Organisation. That means this Man Director Tedros & Bill Gates no longer get to tell Americans that they have to take an experimental gene-therapy vaccine, for a virus they didnโt
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