Volcanoes of France: map, 2025 activity, hikes and safety

Baie de Saint Pierre

TL;DR: On 2025-08-30, the Piton de la Fournaise (Réunion) is at rest (no alert), the Soufrière (Guadeloupe) and the Montagne Pelée (Martinique) remain at Yellow vigilance, and the submarine volcano of Mayotte remains active and monitored. In mainland France, the Chaîne des Puys–Faille de Limagne (UNESCO 2018) is an open-air manual: cones, maars, and Holocene … Read more

Evolution of world maps throughout history

Carte de Martin Waldseemüller (1507), première carte à nommer « America »

TL;DR: From Ptolemy’s ancient maps to digital planispheres, each era has reinvented the way of representing the world. Advances in measurements, projections, and media have shifted the balance between accuracy, usage, and political vision. Today, GIS, open data, and web mapping democratize cartography while relying on technical and ethical choices. Definition and Context A world … Read more

Flags: history, standards, uses, and advice — the educational guide

Drapeaux du monde : symboles de diversité et d’unité.

Flags fascinate because they condense an identity, a memory, and a collective project into a few colors. From medieval battlefields to stadium stands, from institutional facades to shop windows, they signal, gather, and inspire. This educational guide traces the history of flags, explains their standards, provides selection guidelines (materials, sizes, finishes), and shares anecdotes to … Read more