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Now Playing: 08-15-14 Marketplace Tech - High tech stadiums

First up, we take a look at the San Francisco 49ers, who will soon play their first preseason games in their new stadium in Santa Clara. The stadium has been built with new forms of technology with the hopes of revolutionizing the football experience for fans. Plus, how well have you kept up with the week in tech news? It's time for Silicon Tally! This week, host Ben Johnson takes on Mike Pesca, host of the Slate podcast The Gist.