A submarine eruption began on 8 May 2026 in the central Bismarck Sea, 130 kilometres south-east of Manus Island, Papua New Guinea. The eruption revealed a previously unmapped underwater volcano, now provisionally named Titan Ridge Volcano, in a remote and tectonically active area of the Pacific Ocean.

Two wildfires broke out between 24 and 25 May 2026 within Doñana National Park in south-western Spain, one of Europe’s most important wetland and dune ecosystems, protected under UNESCO World Heritage and Ramsar Convention designations.

Held under the theme “Investing in Earth Intelligence for a Resilient Future,” the 2026 GEO Symposium and GEO-21 Plenary.

From 26 to 27 May 2026, Cyprus hosts the EU Space Days, the European Union’s flagship event dedicated to space policy, business, innovation, and strategic autonomy.

Stretching near the border with Austria, the Lednice–Valtice Cultural Landscape in the Czech Republic was listed as a UNESCO World Heritage Site in 1996.