Agence France-Presse: Icelandic singer Bjork and the chief of Canada’s Magma Energy company are publicly feuding over Magma’s planned purchase of an Icelandic geothermal power group, according to comments published Tuesday. The artist, who was crowned Best Actress in Cannes in 2000, has led a public campaign against Magma gradually raising its stake Iceland’s HS Orka, which produces energy from the island’s geothermal power. At a press conference on Monday, the 44-year-old singer called for a …