| http://www.w3.org/ns/prov#value | - s copper from electronic circuits to sell for recycling, in a landfill in Nicaragua. (Hector Retamal/AFP/Getty) Taking note Circuit boards salvaged in Africa, fashioned into notebooks. (E-Lab) Sort it out A worker sorts e-waste in Germany, so that metals such as iron, aluminium, copper and gold can be extracted. (Sean Gallup/Getty) More Slideshows Architecture for a changing world Supersonic jets
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