Everyone who lives long enough is likely to experience back pain. And the cause isn't just aging. We have evolution to blame for a spine that's an engineering nightmare. Cheddar Explores how our spines changed to accommodate human bipedalism.

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Some 9.2 million lead pipes carry water into homes across the U.S., with more in Florida than any other state, according to a new Environmental Protection Agency survey that will dictate how billions of dollars to find and replace those pipes are spent.
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