The official death toll from a volcanic eruption in New Zealand in December rose to 20 on Thursday after police there announced that the last two missing victims have been officially declared dead.The bodies of New Zealand tour guide Hayden Marshall-Inman and Australian tourist Winona Langford were never recovered, following the eruption the volcano off North Island on Dec. 9.According to a statement by Police Deputy Commissioner John Tims, the chief coroner has ruled that both people died on White Island, also known by its indigenous Maori name Whakaari.A total of 47 mostly tourists -- 24 …READ FULL ARTICLE