The transition from wind-driven to mechanized shipping became the first step in what was to be a continued increase in the introduction of sound into the oceans. The oceans are much less transparent ...

NOTICE: The project that is the subject of this report was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of ...

Most people expect a dog to bark or a cat to meow. But nature doesn’t always follow the script. Across the animal kingdom, some creatures produce sounds that are so strange or human-like that they ...

For years, people assumed sharks were the silent type, but that’s not true, and they aren’t alone when it comes to creatures like sharks that make noises. Some of the world’s strangest creatures make ...

An equine makes the low-pitched part of its whinny by vibrating its vocal cords—similar to how humans speak and sing—and the high-pitched part by whistling ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Earth’s oceans have always been a wild world of sound. A ...

Ultrasonic sounds are high-frequency sound waves that exceed 20,000 hertz, a range far beyond what the human ear can detect. These waves vibrate more than 20,000 times per second, creating a hidden ...