Spectators watch the 50-tonne Arcadia spider perform a laser and pyrotechnics show in Bristol, Britain September 4, 2015. Bristol, the European Green Capital 2015, is hosting the world's first recycled biofuel pyrotechnics show. The 50-tonne Arcadia spider is constructed from used repurposed military hardware and fuelled by waste oil from local fish and chip shops. (Photo by Eddie Keogh/Reuters)
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