Detailed text transcripts for TV channel - DW - 20180410:12:53:00
Professor kept letting in a team of international researches at the university of nate holes are examining why exactly the volcanic material made when concrete said jurors will. basically we take a look at the fresh class which is this move surface. represent the people salonica material at their starting condition you can spot from the in their left sides that something start to crystallize within the poorest of the volcanic glass so the glass is turning into something else. that's what's known as the pots and manic reaction and the volcanic glass is so reactive that crystalline structures fo...