A group member watching the pier cam this week sent in a fair question: 'Does anyone know why it's so particularly bad this week?' If you have been staring at green, stirred-up water and wondering what happened, you are not imagining it. The short version: this is not one problem, it is three late-summer factors stacking up at once - a lingering swell, a sudden upwelling flip, and the plankton bloom that upwelling feeds. Here is what is going on under that murk, and when it s