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2. Earmuffs - Wikipedia

   en.wikipedia.org/wiki/Earmuffs

   Two people wearing behind-the-neck earmuffs. Thermal earmuffs are worn for protection from the cold. Because the ears extend from the sides of the head to gather sound waves, they have a high skin surface-area-to-volume ratio, and very little muscle tissue, causing them to be one of the first body parts to become uncomfortably cold as temperatures drop.

3. Hearing protection device - Wikipedia

   en.wikipedia.org/wiki/Hearing_protection_device

   Earmuffs, external: This ear protection fits snug around the person's external ear. Earplugs, internal: These are ear protection that fit inside of the person's ear canal. There are many different types of ear plugs. The most commonly known are foam, musician, or custom earplugs that are made from a mold of a person's ear.

4. Hearing protection fit-testing - Wikipedia

   en.wikipedia.org/wiki/Hearing_protection_fit-testing

   Hearing protector fit-testing is a method that measures the degree of noise reduction obtained from an individual wearing a particular hearing protection device (HPD) - for example, a noise canceling earplug or earmuff. Fit testing is necessary due to the fact that noise attenuation varies across individuals.

5. AOL Mail

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

6. The best baby bottle warmers, according to experts - AOL

   www.aol.com/news/best-baby-bottle-warmers...

   The Munchkin is one of the more straightforward warmers on the market with one temperature setting that heats bottles to precisely 98.6 degrees fahrenheit. Dr. Brown’s Deluxe Bottle Warmer and ...

7. Why Elephants Have Big Ears: The Secret to Staying Cool

   www.aol.com/why-elephants-big-ears-secret...

   Elephants have massive ears to help regulate their body temperature. They have huge blood vessels in their ears. The blood vessels are large and quite visible on the backs of the elephant’s ears.