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.
Reaction to Polish Presidential Election. President Bronislaw Komorowski of Poland and his challenger, Andrzej Duda of the Law and Justice party, spoke after a combination of exit polls and early ballot counts pointed to a runoff. By Associated Press on Publish Date May 11, 2015. Photo by Kacper Pempel/Reuters.