Agence France-Presse: The heirs to Scandinavia’s thrones arrived in the Danish territory of Greenland Wednesday for a visit to draw attention to the effects of climate change in the Arctic region, a spokeswoman said. Prince Haakon of Norway, Princess Victoria of Sweden and Prince Frederik of Denmark, all heirs to the thrones in their countries, will take part in a research expedition to Greenland until June 1 during the official visit. "The three of them have gone to Greenland for five days to study …