Environmentalist group Greenpeace says that Apple's clean energy policies have improved, but the company still has a long way to go. In a new report, Greenpeace analyzes Apple's efforts to reduce its dependency on coal-power, finding that the iPad maker has yet to lay out a realistic plan to power its iCloud offerings with cleaner energy alternatives. Greenpeace's "Clean Energy Road Map" gave Apple a score of 22.6 percent, up from 15.3 percent in April.