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.
1 The Presidential Palace in Warsaw is largest palace in Warsaw and the official seat of the President of the Republic of Poland since 1993. 2  The first presidential tenant was Lech WaÅÄsa when he moved to the Palace from Belweder in 1994.