How engineers create working, floating boats out of concrete

Concrete ships sound like a bad idea, but Archimedes' Principle proves otherwise. Here is why engineers turned to this ...
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Making the heaviest thing on Earth float

I wanted to test the limits of buoyancy by making an extremely dense object float! I show you the science behind fluid dynamics and density Trump says he’s ready to deploy ICE to airports on Monday ...
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Floating and Sinking– Which Things Float? Which Things Sink?

"Quick Tips: Resources for Teachers” is a series of short videos providing down-to-earth advice and instructional tips to teachers of STC™, our signature science curriculum. Each “Quick Tip” offers ...