What is the velocity of soda bubbles? I have noticed that when I pour a bottle of soda into a glass, eventually I can match the speed of which I pour the soda out to the speed of the soda fizz, making the bubbles neither lower or rise. So, is it possible to calculate the speed of bubbles, or are there different variables that define it?

The ocean's are great stores of CO2, especially at the high pressure seen at depths of over 1000m, or so I am informed. So are they fizzy down there, whats it like for a fish, do they basically live in a soda stream?

If I eat spicy food such as a hot curry or a dish with chilli, I consistently get hiccups. Many people get hiccups after consuming carbonated drinks.

Why are some foods more likely to cause hiccups? How is digestion linked with this involuntary contraction of the diaphragm?

Richard Fisher, London, UK

Why does an opened bottle of champagne not go flat (nearly as quickly as it would) with a stainless steel teaspoon in the top?