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Can you trust your sunglasses?

Scientists in Brazil have developed a quick way to make sure your sunglasses are protecting your eyes from the sun's harmful rays.

Many sunglasses carry symbols saying that they protect your eyes from the sun's harmful UV rays.

But can you trust what they say?

Scientists in sunny Brazil have developed a quick way for you to be really sure, as Ben Tavener reports.

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  • 26 Jun
  • From the section Health