Pyroclastic density currents (PDCs) are a major threat during an explosive volcanic eruption. A new study shows that loose tephra accumulations on volcanic slopes tend to re-mobilize rapidly.
The reef’s report card analyzed 286 sites in Mexico, Belize, Guatemala, and Honduras. Communities, scientists, and governments are working to improve coral and ecosystem resilience.
Jungle-piercing lidar surveys over ancient Maya sites give scientists the most extensive maps of lowland Maya civilization to date.
Workshops on Volcanoes; Santiaguito, Guatemala, 4–12 January 2016