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The Guardian - UK

Why aren’t rats eating the fat that becomes sewer fatbergs?

Food for rats? ... Monster fatberg in the east London sewers. — Food for rats? ... Monster fatberg in the east London sewers. Photograph: Thames Water/PA

If the population of rats is only controlled by the available food, why are they not eating the fat in the sewers before it turns into fatbergs?

Steve Irons

• Post your answers – and new questions – below or email them to nq@theguardian.com

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