limestone

Looking at the stones below, many people have been surprised by the strange difference and wonder why they can balance for thousands of years. Nature always creates such

The cliff is named Chan D Ya (San Dan Nhai), which means

Unesco's Scientific, Educational and Cultural Organization has recognized the Hoang Long Scenic Area as a World Natural Heritage in 1992.

Ecologists in Indonesia apply simple technology to create biological rock at the bottom of the sea, to protect coral reefs.

Scientists say they have found a possible way to reduce carbon dioxide levels in the atmosphere by adding lime to seawater. They think that this measure can significantly reduce

One of the most important moments in Earth's life was the Cambrian explosion of life, about 540 million years ago, when complex and multicellular life forms appeared throughout the

In the Navajo region of Arizona, in the southwestern United States, there is a mountain range that looks as if heaven is Mount Antelope.

Le Van Thuong's family in Vinh Dai village (Huong Vinh commune, Huong Khe district, Ha Tinh province) was shocked when the night was dark, his garden suddenly subsided 2 big holes.

Concrete capable of cracking itself is ready to be tested in practice, according to experts at Delft University of Technology (Netherlands). The Dutch research team says that