Treehugger reports that London is taking material efficiency into consideration in designing its stadium for the 2012 Olympic Games. The facility will be built from with as many recyclable materials as possible, including a hemp roof. The stadium will also be demountable, meaning it can be disassembled, moved, and rebuilt in a new city. It will be largely bolted together, rather than welded, and break down into pieces that can fit on cargo ships. This new philosophy of “low impact” games and reusable stadia might afford poorer countries the opportunity to host future Games. Chicago, a possible 2016 host, is also considering more reusable and versatile construction materials.