Waiting for my tea water to boil the other night, I asked my husband whether the small bubbles at the bottom are an indication that boiling point has been reached.
No, he said. The bubbles have to come to the top. In other words, a rolling boil.
But I don't want to use up all the oxygen in the water.
His reply? There is no such thing as oxygen-deprived water.
Au contraire, mon ami. There is such a thing. According to "Scientific American" (Feb. 3, 2010) "A plague of oxygen-deprived waters from the deep ocean is creeping up over the continental shelves off the Pacific Northwest and forcing marine species there to relocate or die."
So yes, while bubbles may need to rise the top (which I just learned is called "nucleation"), I am now wondering if by allowing all the oxygen to boil out of my tea water I could be facing a potentially fatal situation. Or maybe I will just need to relocate.