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Good Question: Reply All: Speedometers, Red Barns & Onion Tears

<strong> </strong> <br><br>Why are barns red? Why do onions make us cry? Why do speedometers go up to 140 when we never go that fast? WCCO's Heather Brown answers these Good Questions (1:58). <br><br><em>WCCO 4 News At 10 – Sept. 6, 2013  </em>