Sir: Over 70 years have elapsed since Karachi has expanded into one of biggest metropolitan cities, but its garbage and sewerage continues to be dumped into sea, creating an environmental disaster, with toxic waste killing fish and posing dangerous health hazard to citizens. Unregulated and irregular construction added to mess that existed and different stake holders and players blame each other, while none of them have made any efforts to resolve basic problem of garbage collection and keeping sewerage drains clear from being blocked. Almost 15,000 tons of garbage is dumped daily in Karachi and other than blame game, there has been no effort for past few decades to resolve issues, which other cities have managed to do the world over. The biggest landfill in USA which stores about nearly 50 million tons is in a narrow valley in Apex area an hour north of Las Vegas. Ideal choice of landfill is an area surrounded by small mountains. The garbage is layered like sheet cakes beneath which pipes crisscross the land, carrying away the methane generated by decomposing garbage. Such garbage dumps exist all over the world. MALIK TARIQ ALI Lahore