BARCELONA, Spain--(BUSINESS WIRE)--The GSMA today announced that the 2015 Mobile World Congress has officially been certified as carbon neutral, reaffirming its position as the world’s largest carbon neutral conference and exhibition. BSI (British Standards Institution) has verified that the GSMA successfully completed the certification process under the PAS 2060 international standard and that Mobile World Congress has achieved a carbon neutral footprint. Additionally, as part of its broader e
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