He is active as the chief information officer of our company.

The Paleolithic is the first era of human history.

This mineral is called ulexite and has special optical properties.

The Neolithic was an important period in human history.

He is known as an expert in psychoanalysis.

As the name suggests, chordates are a group of animals that have a notochord.

The spinal reflex is a part of our body that reacts automatically.

He is strong like a stone.

This ancient proverb, 'know the other side and yourself, and you will not be in danger in a hundred battles', teaches us the importance of understanding ourselves and others.

Workers of all countries, unite, let's show our power.