Norwegian rats have set out to see the world via international garbage shipments. The northern Sweden mining town of Kiruna has been invaded by thousands of rats believed to have crossed the border with trash heading for the city's local recycling center. Kiruna's bitter Arctic climate normally keeps rats away, but the warm piles of garbage at the recycling center seem to have created a safe haven for the stowaway rodents. Local officials have called in exterminators to deal with the critters at the recycling center, which processes 25,000 tons of Norwegian waste each year. Where's the Pied Piper when you need him?