In a special layer of the ocean, under the influence of temperature and pressure, sound travels the slowest and the farthest.
- Unusual mound revealed when snow falls, farmer risks digging, only to run away upon seeing the inside
- Decoding the enchanting river at the southernmost tip of the motherland, classified as one of the rarest in the world
- If the size of Earth is 1cm, how big would the largest star in the universe be?
- A marvelous scene appears in Japan after 7 years, many people emotionally capture the special moment!
