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The Food Safety Discovery Zone is a 40-foot truck that features several hands-on, interactive activities, cool lighting and sound effects, and eye-catching educational tools to teach the four easy steps that families can take to avoid food borne illness. The truck was parked in front of the U. S. Department of Agriculture (USDA) as part of USDA’s “Take Your Child to Work Day” event held, in Washington, DC, on Thursday, April 28, 2011. USDA photo by Lance Cheung.