Champaign Bubbles

An image of the carbon dioxide flowing out of a glass of cold champaign. From Gérard Liger-Belair of the University of Reims Champagne-Ardenne, in France where else?
 (J. Agric. Food Chem., DOI:10.1021/jf101239w).

The carbon dioxide is colder than the room air, and it is heavier than air as well.