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.
Bronislaw Komorowski, Polandâs President, Concedes Defeat to Right-Wing Challenger Andrzej Duda. President Bronislaw Komorowski, center, conceded to the challenger Andrzej Duda of the Law and Justice Party after Sunday's election. Credit Pawel Supernak/European Pressphoto Agency.