Spanish Biology Olympiad experiences in this field. This competition has always included both practical and theoretical examinations. In Spain the first National Biology Olympiad was organised in the Canary Islands by a group of high school teachers. By that time the Community of Madrid and the Community of Valencia had already celebrated their Regional Olympiad for four or five years. Currently, local phases are held in all the national autonomous communities, including Ceuta and Melilla, and the Spanish centres abroad. The Spanish Biology Olympiad is registered under number 585 939, Group 1, Section 1 in the National Registry of Associations of the Ministry
How many angels can dance on the head of a pin? How many angels can dance on the head of a pin? The question "How many angels can dance on the head of a pin?" (alternatively ""How many angels can stand on the "point" of a pin?"") is a reductio ad absurdum of medieval scholasticism in general, and its angelology in particular, as represented by figures such as Duns Scotus and Thomas Aquinas. It is first recorded in the 17th century, in the context of Protestant apologetics. The question has also been linked to the fall of Constantinople, with the imagery of scholars debating about minutiae while the Turks besieged the