Rare set of varied factors triggered Black Death - Ars Technica

1. Rare set of varied factors triggered Black Death  Ars Technica
2. Climate-driven changes in Mediterranean grain trade mitigated famine but introduced the Black Death to medieval Europe | Communications Earth & Environment  Nature
3. Volcanic eruption led to the Black Death, new research suggests  CNN
4. How volcanoes upend the story of what sparked the Black Death  The Washington Post
5. Black Death's Carnage Traced to a Volcanic Eruption Half a World Away  ScienceAlert