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.
A Polish politician, a former trade union and human rights activist, and also a former electrician. He co-founded Solidarity, the Soviet bloc's first independent trade union, won the Nobel Peace Prize in 1983, and served as President of Poland from 1990 to 1995.