Some of Europe's biggest real estate fund managers have teamed up with...Bureau Veritas to develop an environmental rating system for property investments. With more than $250 billion in assets under management between them, ING Real Estate,...GE Real Estate Europe, Axa REIM and Natixis unit AEW Europe [joint venture Caisse d'Epargne & Groupe Banque Populaire] said on Tuesday that they were working on a Global Green Rating (GGR) system... [The] scheme would assess and benchmark the environmental performance of their existing buildings by rating them according to...indicators [including]...a property's energy and water consumption, the waste it produces, its carbon emissions and transport links, plus its record on occupier health and safety.