UV radiation comes primarily from the sun. It comprises UVA, UVB, and UVC rays, each with unique properties. While some types of UV radiation provide health benefits, they can also pose risks. The sun ...
Prior to 1896, no one had ever had an X-ray picture taken of a body part. This now-ubiquitous diagnostic tool that lets us see deep inside the body simply hadn't been invented yet. But just 121 years ...
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