crust

Former intelligence Edward Snowden once revealed shocking information: In the heart of the Earth contains creatures and progressive civilization that has never been known.

The large collection of insects such as bees, termites, spiders, flies, ants dating back about 53 million years ago challenged the hypothetical theory of India's ancient history.

Oxygen - the biggest element in the Earth's crust and occupies about 20.9% of the air volume, is often called oxygen and an essential part of life on our planet.