Earth

If humans evolved from the forest archaeopteryx, how did the forest archaeopteryx emerge?

In the Arctic Siberian region, there is a huge crater called "the mouth of hell"

If we dig up all the sand in the Sahara Desert, then we can see the "bedrock" of this desert

The earth's water resistance comes from the high temperature, pressure and density of its interior

The legendary prehistoric civilization is not the only one "Atlantis", then this mysterious "yellow brick road" could be the remains of some other prehistoric civilization left behind?

Do UFOs exist?

With the progress of science and technology, human beings have now begun to increase their efforts to explore the universe and the ocean. With the help of advanced submersibles, more and more people have the opportunity to dive into the deep sea thousands of meters deep for research. It is also with the arrival of human beings that we found that there are some things in the deep ocean that should not exist, which are worrying.

In orbit for longer and longer periods of time, we need to solve not only inorganic resupply problems such as food, water, oxygen and propellant, but also the various problems faced by astronauts flying in orbit for long periods of time

The earth was born more than 4 billion years ago, when it was very different from the earth of today, one of which is that the environment of cosmic space is more different.

Since there are many lakes in China, many of them have the title of "largest".