Once the Earth was unlike himself

Before the appearance of humans, the world was completely different. Our planet didn’t always look like this. Over the last 4.5 billion years it has gone through some of the most incredible changes — and they are absolutely indescribable. But we will try to describe them. If you could go back in time millions of years, you do not just see a few other animals. You would have discovered a completely alien world right from the pages of science fiction.