There are three primary ways that naturally occurring radioactive isotopes decay: 1  Alpha particle emission. 2  Beta particle emission. 3  Gamma radiation emission.
President condemns Ankara attacks. The current migration crisis is a problem of the entire EU and not of a particular country, Polish President Andrzej Duda said after the end of the Visegrad Group two-day summit in Balatonfuered, Hungary, on Friday.
President of Serbia. The President of Serbia (Serbian: Ð¿ÑÐµÐ´ÑÐµÐ´Ð½Ð¸Ðº Ð¡ÑÐ±Ð¸Ñe / Predsednik Srbije), officially styled as the President of the Republic, is the head of state of Serbia. The current office holder is Tomislav NikoliÄ who was elected on 20 May 2012.