National Australia Bank (NAB) has agreed to help finance the world's largest coal export terminal and has linked loans to a new set of social and environmental goals. NAB has stepped in to pull together "sustainability linked" loans to the value of $565 million, with the bank's group executive David Gall saying, this sort of "behaviour-based lending provides an opportunity to help our customers create greater environmental and social impact in sectors not easily diversified." The loan conditions require the port to reduce…