According to UK milk-merchant Cravendale, over 300,000 tonnes (364,000 tons) of milk are tossed out every year because people cannot tell whether it is sour or not. A new milk jug tests the white ...
You’re at the store, and you grab a jug of milk to plop in your grocery cart. You notice there’s a circular indentation in the container, so you take a peek at a few others. This little dent is ...