14 of your most embarrassing questions about wine answered with science

We've been there.

You're in a liquor or grocery store, trying to pick out wine with a group of friends when, inevitably, some unexpected member offers up their expert opinion.

Truth be told, there's a whole lot of science behind wine. Genetics, chemistry, microbiology, and even psychology all play a role in everything from how wine is produced, to which bottles we buy and when.

To get a better sense of what goes into making that glass of red or white, in 2016 we chatted with James Harbertson, a Washington State University professor of enology - that's the study of wine. In honor of National Wine Day, here's everything you need to know.