Iranian Biology Olympiad International Biology Olympiad coordinator for Iran since 1998. IrBO is running inside the rules and regulations of International Biology Olympiad, and is a regular participant and a member of it. Iran is planning to be a host for International Biology Olympiad in 2018. Iranian Biology Olympiad Iranian Biology Olympiad (IrBO) is an annual multistage competition for Iranian high school students of the age of 17-18 in the field of biology. The first Iranian Biology Olympiad was launched under the auspices of the Ministry of Education, Iran in 1999. Since then, the four winners of the national competitions participate regularly yearly
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