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No, these aren’t glow-in-the-dark venetian blinds. This photo shows a “BioFence” — a commercial photobioreactor set up at the NRC Institute for Marine Biosciences research station in Ketch Harbour, Nova Scotia. This particular device cultivates microalgae on an almost continuous basis in order to support research on algal biofuels (see: Going green: biofuels from algae). The photobioreactor helps scientists study how various environmental conditions, such as pH, nutrient balance and temperature, affect the growth of microalgae.