Sun block: The reason beer bottles are brown may surprise you

If you've ever been curious about the colour of beer bottles and why they aren't clear, we have your answer (and it may not be what you think).

Have you ever stared at a beer bottle and wondered why it's brown? Wonder no more.

Believe it or not, it all has to do with sitting in the sun — similar to how sunglasses shield your eyes from harmful ultraviolet (UV) rays.

In the early days, beer-makers were concerned about the damage UV rays could cause to their product if the bottles were left sitting in the sun for an extender period of time.

Beer bottle

(Nathan Coleman)

To avoid the beer changing colour or taste as it remained still in the bottle, dark-brown glass worked as an added layer of protection from the sun.

Watch the video above to get the full story on the beer bottle's colour from The Weather Network reporter Nathan Coleman