In Canada, plastic milk bags became the less-fragile alternative to glass jugs thanks to the metric system. Have you got a Big Question you'd like us to answer? If so, let us know by emailing us ...

Customers who buy the half-gallons plunk down a $3 deposit for each glass jug. When the milk is gone, they can trade in the empties for a fresh milk supply, which can run about $8 before the cost ...

It's worth noting that the milk in the experiment was stored in the dark, which is crucial to maintaining its flavour if in clear glass. A problem with a clear glass bottle is it allows light ...