Zachariah Reitano's Roman Health is using the treatment of erectile dysfunction to save lives by helping men discover the sometimes very serious underlying causes of the condition. For full interview, [click here](https://cheddar.com/videos/taking-the-stigma-out-of-e-d).

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How Road Signs Got Their Shapes
Today we take road signs for granted. We see these shapes and colors and understand their meaning, even without words. And that was the intention. There’s a forgotten science to the shapes of our signs.
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