Period 5 element dimethyl telluride, (CH)Te, a gas with a garlic-like odor which is exhaled in the breath of victims of tellurium toxicity or exposure. Iodine is the heaviest essential element utilized widely by life in biological functions (only tungsten, employed in enzymes by a few species of bacteria, is heavier). Iodine's rarity in many soils, due to initial low abundance as a crust-element, and also leaching of soluble iodide by rainwater, has led to many deficiency problems in land animals and inland human populations. Iodine deficiency affects about two billion people and is the leading preventable cause of intellectual disabilities. Iodine is
Roberto Goitre Roberto Goitre Roberto Goitre (Turin, 1927 - Piacenza, 1980) was an Italian choirmaster, composer and teacher. Upon finishing his academic studies, Goitre devoted himself entirely to choral conducting. At the beginning of the 1960s, on invitation from Marcello Abbado, he became director of the choir of the "Giuseppe Nicolini" Conservatoire in Piacenza, where he taught until his death in 1980. In the 1970s Goitre turned his attention to the musical pedagogy of Zoltán Kodály and spent a significant amount of time in Hungary carrying out research. He also widened his knowledge of Italian and Hungarian folk tunes, which he made