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.
The 43-year-old Eurosceptic and nationalist leader will become Poland's new president after winning 51.5 per cent of the vote. Opposition candidate Andrzej Duda celebrates with supporters his victory, as first exit polls in the presidential runoff voting are announced in Warsaw on Sunday night Photo: AP. By Matthew Day, Warsaw.