Dive Summary: 

• A rat infestation of Medicine Hat's city landfill has been discovered despite Alberta's rat-free status since 1950. 
• The minister of Alberta Agricultural and Rural Development announced at a press conference held by city officials that the rat problem will be addressed. 
• The city has already moved to eradicate the rat colony by employing the services of a pest-control firm.  

From the article: 

In a province that says it is rat-free, the discovery of a rat colony at the city landfill is making headlines. ...