United Press International: Australia’s new climate change minister aimed to reassure the country’s coal mining sector of its vital role in the country’s economy. Greg Combet, a former coal engineer and union official, replaced Penny Wong in the post in Prime Minister Julia Gillard’s new Cabinet announced Saturday. “You do not take the back of the ax to the fundamentals of the Australian economy,” Combet told The Australian newspaper Monday. “I’ve got a responsibility to support those people’s …