Narrator: If bubbles are supposed to float up, what exactly is causing Guinness bubbles to do something crazy and sink? Lee and his team devised a number of equations to explain this peculiar ...

This region sinks under its own weight because it is ... a cocktail glass's slanted sides provide the ideal surface for Guinness bubbles to flow downwards, meaning the pint will settle faster.

Much of the appeal of the draft from Guinness beer is that the bubbles sink and flow collectively, known as "bubble cascade." Brewers and researchers believe this collective flow behavior must ...

Here’s the Real Reason Beer Comes in Aluminum Cans If Guinness were to gain its bubbles solely from carbon dioxide, as is the case for most beers, it’d be an entirely different product —more ...