How Rats Took Over North America
Rat remains from shipwrecks and dig sites show how two rodent species duked it out in eastern North America
![How Rats Took Over North America](https://static.scientificamerican.com/dam/m/6c88beb7446c5155/original/DMPCXR.jpg?w=1200)
Rat remains from shipwrecks and dig sites show how two rodent species duked it out in eastern North America
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