検索キーワード： 制作 "Listening Library" 地球科学

If a black hole is not a hole, then what is it? Find out what black holes are, what causes them, and how scientists first discovered them. Learn how astronomers find black holes, get to know our nearest black-hole neighbor, and take a journey that will literally s-t-r-e-t-c-h the mind.

This engaging audiobook chronicles the beginning of the modern age of astronomy, then follows later discoveries, including NASA's current missions in space.

It might seem lonely at the top of the world, but the North Pole is teeming with life! Polar bears, walruses, and arctic seals make their home on sea ice that can be nine feet thick while the Inuit and other indigenous peoples continue their traditions and means for survival in this harsh climate.

What Do We Know About Crop Circles? lets curious young listeners learn about the phenomenon of crop circles and how they came to be one of the most studied mysteries of the natural world. Learn about all of the rational and fanciful explanations for these flattened patterns in crops all over the world, from the United Kingdom to Australia. Artists and hoaxers alike have claimed credit for these massive projects, but some people think that the source could be paranormal. Are these circles an elaborate prank, or could they be something more?