Retreat of glaciers since 1850 doing so due to transient local weather conditions, which have brought more precipitation and cloudier, cooler summers since 2002. Tropical glaciers are located between the Tropic of Cancer and the Tropic of Capricorn, in the region that lies 23° 26′ 22″ north or south of the equator. Strictly, a tropical glacier is located within the astronomical tropics; the area where the annual temperature variation is less than the daily variation, and is within the oscillation area of the Intertropical Convergence Zone. Tropical glaciers are the most uncommon of all glaciers for a variety of reasons. Firstly, the regions are the
Validation of foreign studies and degrees Validation of foreign studies and degrees The Validation or recognition of foreign studies and degrees is the process whereby a competent authority in one country formally recognises the value of a qualification from a foreign country. This can entail total or partial validation of foreign university and non-university studies, degrees and other qualifications. Particularly within Europe, this is covered by a number of international conventions and agreements. The first generation of recognition conventions was developed under the auspices of UNESCO in the 1970s and 1980s, with conventions covering Latin America and the Caribbean (1974), the Mediterranean (1976), the Arab States