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2 of 7: Front lawn of City Hall at Cambridge Science Festival
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3 of 7: Mayor E. Denise Simmons kicks off the Carnival
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4 of 7: Kids really got into science at the Carnival booths!
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5 of 7: Councillors Davis and Seidel with Mayor Simmons
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6 of 7: Figuring it out at the Science Carnival
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7 of 7: MIT President Hockfield, Mayor Simmons, and Councillor Seidel
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