The US government environmental-friendliness assessment tool EPEAT, in part created by Apple, environmental groups and federal agencies, has cleared five "ultrabooks" or super-thin notebooks as conforming to "green" standards, including the current version of the MacBook Air. Apple had famously pulled out of the registry with the release of the Retina MacBook Pro, possibly concerned with losing the coveted "Gold" ranking for the model, which uses more glue and other techniques deemed less easily recyclable than in the past.
