This image released by Thames Water company shows part of a 15-ton lump of fat and other debris coagulated inside a main London city sewer in 2013. (AP Photo/Thames Water)
Things that weight less than the "fatberg" removed from a London sewer: 18 horses, 3 Hummer H2s, or 77,000 iPhone 6s. A "fatberg" is what is created when congealed fat and unflushable items (think sanitary napkins, diapers, wipes, the Independent notes) combine in the sewer to create, well, the stuf...
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