Greenpeace activists hold a banner during a demonstration outside Microsoft's office in Istanbul

 
Greenpeace activists hold a banner during a demonstration outside Microsoft
Greenpeace activists hold a banner during a demonstration against what they say are energy choices made by Microsoft, outside Microsoft's office in Istanbul April 18, 2012. The words on the banner refer to Greenpeace's report, "How Clean is Your Cloud", which explores the energy choices made by the fastest growing IT companies in their use of cloud computing. REUTERS/Osman Orsal (TURKEY - Tags: BUSINESS CIVIL UNREST ENVIRONMENT SCIENCE TECHNOLOGY)