Humans have been drinking beer for thousands of years. During many periods in history, beer was safer to drink than water as the water was often contaminated while the booze was safe. PBS channel It’s Okay To Be Smart covers the science of beer in this new video.
[youtube height=”500″ width=”800″]http://www.youtube.com/watch?v=Y1oaFtpGKuM[/youtube]
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