Frozen foam columns are a result of the air-water mixture bubbling up through the ice in freezing conditions
Poo isn't something generally talked about in polite company but like it or not, all of that human waste has to go somewhere. In smaller rural communities, it usually goes to wastewater lagoon systems; the alternative is mechanical treatment plants which process waste far more quickly but are expensive, labor intensive and often use chemicals. Enter the "Poo-Gloo," or Bio-Dome as it is officially known – an igloo-shaped device that can reportedly clean up sewage as effectively, but far more cheaply, than its mechanical counterparts. The Poo-Gloo, developed by Wastewater Compliance Systems, Inc., uses a combination of air, dark environment and large surface area to encourage the growth of a bacterial biofilm which consumes the wastewater pollutants. It is claimed that Poo-Gloos can treat pollutants just as quickly as mechanical plants while operating at a fraction of the cost – hundreds of dollars a month rather than thousands – and can be retrofitted to existing lagoon systems.