The Viking survival guide to climate change

Valuable lessons: The Viking legacy is not only good for entertainment, like this annual Viking festival in Spain, but it can also teach us how to deal with global warming. — Reuters

POPULAR culture has it that Vikings in their heyday loved to “go Viking” – take to their longships to rove, settle or pillage from North America to Asia.

But a driving force behind those Norse voyagers wasn’t just the lust for treasure or power or exploration. In some cases, it may have been climate change.