Lens width: Usually measured in millimeters (mm), this is the distance from one end to the other end of a single lens. While the lens width will differ depending on the style, most best-selling ...
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Animals with big heads: How nature designs them
In the animal world, some creatures stand out because of one clear feature-- a big head. This isn’t just about looks. A larger head often helps animals feed, communicate, protect themselves, or ...
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