The History of Our Planet

By Noah Bell

            Our planet Earth has been somewhat alive for around 4.6 billion years. During the first periods of its life, there was no life on earth. The first forms of life started about 3.8 billion years ago with cyanobacteria. Life began to become more diverse and adaptable after what we call the Cambrian explosion; 544 million years ago. Humans have only been around for about 4 million years ago. If you look at this time frame against how long ago earth was created, you could see that humans have not been around very long. Cyanobacteria was the first living organism and is still around today. It is hard to imagine how long they have actually been on earth for. Scientist estimate that earth will be able to sustain life for about 1.75 to 2 billion more years. This will not affect us today, but will greatly impact our future generations.