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Seattle teens dive into underwater robotics competition

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SEATTLE — In the McConnaughey house, a robot sits as a centerpiece on the dining room table.

Three teenage girls question whether their creation will be ready for its next challenge. Snacking on guacamole and chips, Hannah, Haley and Annika begin to pull apart their finished machine.

Something doesn’t feel right.

Haley McConnaughey, 14, explains the trigonometry she did to calculate the dimensions for the blades on the robot’s propellers.

The team asks themselves again: Can their underwater robot save…

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