cambrian

Throughout 4.5 billion years of history, the planet's Arctic and Antarctic periods have changed places ... 26 times in every million years. More surprisingly, it is the planet we

Long before the dinosaurs dominated the Earth, the sea worm Capinatator praetermissus appeared in the oceans of the Cambrian period about 541 million years ago.

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