A look at St. Louis' iconic Gateway Arch (Part 1)

Jon Stewart fights to help veterans exposed to burn pits (Part 1)
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Jon Stewart fights to help veterans exposed to burn pits (Part 2)
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Inside the effort to feed Florida's manatees (Part 1)
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Inside the effort to feed Florida's manatees (Part 2)
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80 years after Pearl Harbor, survivors reflect on the day that changed history (Part 1)
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Musicians spreading holiday cheer in hospitals across U.S. (Part 1)
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Musicians spreading holiday cheer in hospitals across U.S. (Part 2)
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Blood test detects over 50 types of cancer (Part 1)
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