Australian engineers have invented an anti-fatberg coating for sewer pipes that could prevent the congealed masses from blocking the wastewater system and leading to overflows and flooding. Fatbergs – solidified masses of fat, oil and grease that accumulate in sewer pipes, collecting wet wipes and other material – are a major concern for wastewater authorities globally, responsible for 40% of blockages in Australia, and a likely source for the mysterious balls that recently washed up on Sydney beaches. To prevent fatbergs from forming, RMIT engineers developed a zinc and polyurethane coating that could be applied to concrete pipes in problem