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Here’s the first two episodes of Discovery’s new reality show “Unchained Reaction”

Episode 1: Heavy vs. light is the theme of a build-off that pits electronics experts against set carpenters in the debut of the series in which two teams compete to build elaborate, chain-reaction-producing contraptions.

Episode 2: Rocket scientists and special-effects artists compete to build a fire-and-ice-themed contraption.

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