Outdoor ad: Science World: Gold Billboard

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Vancouver’s Rethink wrapped a billboard in 22 k gold to promote Science World’s Treasure! exhibit, and to dramatize this fact: 2 oz of gold can be hammered so thin it covers 200 square feet.Vancouver’s Rethink also glued 9,000 dazzling glass "diamonds" to a billboard to promote Science World’s Treasure! exhibit, and to dramatize this fact: compared to most other gems, diamonds aren't all that rare.