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.
Joachim Gauck is the BundesprÃ¤sident (federal president), the head of state of Germany. He was elected as president on 2012 March 18 after the resignation of Christian Wulff. The de facto most powerful office in Germany is the office of Bundeskanzler (federal chancellor) which is currently held by Angela Merkel.