It's easy to look back on the past through rose-tinted glasses, as the saying goes, but new research suggests that the mid-sixth century was definitely a time to forget.
원문출처 : https://www.cnn.com/2018/11/20/health/worst-year-536-scli-intl/index.html
원문출처 : https://www.cnn.com/2018/11/20/health/worst-year-536-scli-intl/index.html