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What's the best way to stop signs of aging?

And why are DNA tests never 100% accurate?
08 September 2023
Presented by Chris Smith with Relebogile Mabotja, 702. 

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Do collagen skin treatments work? What exactly are teeth? Are DNA tests ever 100% accurate? Why do dead bodies float? Why doesn’t the pole star move? Dr Chris Smith and Relebogile Mabotja have all the answer.

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