The Backyard Scientist filled a tank to the brim with water balls, which are little polymer beads that expand to slimy squishy balls when soaked in water, and then poured in molten aluminium to create some wild designs. It's cool because with all the different ways the molten aluminium can move within a vat filled with balls, each pour results in a totally different design.
Here's The Cool Thing That Happens When You Pour Molten Aluminium Inside Polymer Water Balls
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Science fiction and fantasy offer a rich legacy of great books - but that abundant pile of reading material can also be daunting. So sometimes, it's easier to fake it. We asked some of our favourite writers, and they told us the 10 books that everyone pretends to have read. And why you should actually read them.
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