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What happens when you try to fill a Klein bottle?

The Klein Bottle is a 4D mathematical oddity. We test a 3D model to see how its non-orientable surface behaves when filled ...
The Cool Down on MSN

Woman shares brilliant hack using empty sauce jars: 'This is genius'

Taking the last sips from a bottle of wine or finishing off a jar of pasta sauce invokes, in some, the urge to clean and repurpose the glass vessels. One TikToker who understands the value of a ...