Prime Minister Tony Abbott on Tuesday announced a greenhouse gas reduction goal for Australia that he said struck “the right balance” between economic concerns and the need to address climate change , but scientists and environmental groups said the plan fell short of what was needed. The goal — reducing carbon emissions at least 26 percent, and possibly 28 percent, from 2005 levels by 2030 — also earned Mr. Abbott a stinging rebuke from the Marshall Islands, the tiny archipelago northeast of Australia that is threatened by rising sea levels. “If the rest of the world followed Australia’s lead, the Great Barrier […]