How do we get vitamin D from sunlight?

Why does sunlight provide you with vitamin D? How accurate are DNA tests?
18 March 2016
Presented by Chris Smith

sun.jpg

Heat generated from the nuclear fusion in the Sun

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If I was on another planet would we see stars the same way? Why do we measure rain in ml? How do we get vitamin D from sunlight? How accurate are DNA tests? What is a lipoma? How long does it take to recover from malaria? Plus, is pollution harming unborn babies?

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