PTELook at the text below. In 35 seconds, you must read this text aloud as naturally and clearly as possible. You have 35 seconds to read aloud.

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Beginning in 35 seconds.

Think of your community's traffic. When the traffic lights are functioning, drivers ( usually ) behave. Break a light, and everything comes to a standstill. Within our bodies, we could liken that broken traffic light to a DNA mutation — one that has the potential to mess up our body's everyday operations. So where lightning might knock out a traffic light, what causes mutations in DNA?

PTERead Aloud: #1196

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