I mentioned a few days ago that the water hyacinth is making a comeback on Lake Victoria, after being almost eradicated by biological control. That’s sparked a small-scale furniture-making industry, but is obviously bad news for fishermen, who are forced to venture further out into the lake to get good catches. That’s far more than just a nuisance, according to an article in The Nation today. The further you go out from shore, it seems, the greater the danger of falling foul of pirates! The veritable heart of darkness that is the nile perch fishery on Lake Victoria is the subject of a very well-reviewed documentary, “Darwin’s Nightmare,” which I hope to see soon. Have you?