…co-ordinating activities to celebrate their tenth anniversary. Education Gregory Marler has created a video tutorial in which he explains how to add churches, mosques, synagogues, temples and other places of worship to OpenStreetMap. He is using Field Papers and the iD Editor. Maps Several professional geologists and vulcanologists have commented… (Search hits: 1 in body, 0 in title, 0 in categories, 0 in tags, 0 in other taxonomies, 0 in comments. Score: 2.12)