Mont Blanc massif led to calls to limit access to the most popular summits and for the mountains to be treated with greater respect. The Mont Blanc massif has provided numerous opportunities for academic research, dating back to the very first ascent of Mont Blanc in 1786 during which Michel Paccard carried scientific equipment to confirm it as the highest summit. In 1820, an ill-fated expedition led by Dr Hamel included pigeons intended for release at varying altitudes to measure the impact of reduced air density on their ability to fly. In 1890, Joseph Vallot built a small meteorological observatory at approximately between
President of the European Commission term, despite his being the most 'dynamic' leader until Jacques Delors. Hallstein's work did position the Commission as a substantial power. The presidents were involved in the major political projects of the day in the 1970s, such as the European Monetary Union. In 1970, President Jean Rey secured the Community's own financial resources and in 1977, President Roy Jenkins became the first Commission President to attend a G7 summit on behalf of the Community. However, owing to problems such as the 1973 oil crisis and the 1979 energy crisis, economic hardship reduced the priority of European integration, with only the