Huge Blobs of Fat and Trash Are Filling the World’s Sewers

First, someone might pour molten turkey fat down a drain. A few blocks away, someone else might flush a wet wipe down a toilet. When the two meet in a dank sewer pipe, a baby fatberg is born. Eventually, more fat, oil, and grease congeal onto the mess and build up into giant stinking globs. When they get big enough, fatbergs can clog sewers entirely, sending raw sewage gushing into streets. By the time a 15-ton monstrosity was pulled from the sewers of London’s Kingston borough in 2013...

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