When I went over to my mom’s house the other night, I opened the refrigerator to find this odd sight. Mom told me that when my cousin Zach visited, he persisted in doing this to all of the soda bottles, and when she asked him why he said that it keeps them fizzy for longer (less air in the bottle = less space for bubbles to escape, I suppose). He swears it’s true, but it seems to me that re-pressurizing the contents of the bottle is the only thing that would really keep it fizzy. Any scientists out there want to confirm/refute my suspicion?