Volcanology Watch: Mount Pelée in Martinique is back in the spotlight after a spike in unrest: the Martinique Volcanological and Seismological Observatory logged 124 volcanic earthquakes in the week ending July 31 (nearly triple the prior week) and 331 across July, alongside ground swelling since May. The alert level remains YELLOW, with scientists saying an eruption is not imminent, but that a change over weeks to months “cannot be excluded.” Disaster Preparedness: In the Eastern Caribbean, PAHO/WHO and partners ran a hands-on workshop in Barbados to strengthen molecular diagnostic capacity for diseases like measles, leptospirosis and hantavirus, using a One Health approach that links human and animal health labs. Marine & Tourism Stress: A new report flags a major sargassum surge—about 27 million metric tons in July across the Atlantic, Caribbean and Gulf of Mexico—described as “not normal,” with seaweed smothering shorelines and disrupting marine life and visitors. Earthquake Update: A 4.4 magnitude shallow quake hit the Eastern Caribbean early Sunday near Saint Lucia; tremors were felt across Martinique and nearby islands, with no damage reported.