Veritasium on MSNOpinion
This sounds impossible… but can you float in concrete?
Most people assume concrete automatically means sinking. But floating has less to do with weight and more to do with density.
When you need to repair a sidewalk, create a space to store a trash can, or build a small storage shed, a few basic concrete skills come in handy. A small concrete slab doesn’t cost much to DIY, and ...
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