"Reluctance to change" helped medieval Icelanders survive

Most medieval societies faced with plague or natural disasters relied on flexibility to save their cultures, but new research shows that the "people of medieval Iceland survived disaster by sticking with traditional practices."

A paper by Dr. Richard Streeter, appearing in the Proceedings of the National Academy of Sciences, discusses the resiliance of the Icelandic people faced with disease, volcanoes and climate change which disrupted crops and killed as much as half the population.