Over-exposure to the sun is of course bad for your skin, but that's not the only thing adversely affected by its rays. Man-made materials like plastic will slowly degrade when left out in the sun, so 3M has developed a new line of hard hats featuring a color-changing UV sensor that tells the wearer their head protection might not actually be so safe.
Over-exposure to the sun is of course bad for your skin, but that's not the only thing adversely affected by its rays. Man-made materials like plastic will slowly degrade when left out in the sun, so 3M has developed a new line of hard hats featuring a color-changing UV sensor that tells the wearer their head protection might not actually be so safe.
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