Earth formed around 4.54 billion years ago. One billion in figures is a one followed by NINE zeros.
Life began to appear around 3.5 billion years ago.
Dinosaurs first appeared on Earth between 243 and 231 million. years ago. They were on Earth for 177,000,000 years.
And Human? 200,000 years ago.
What do I feel?
We must be aware that no matter how long we survive on Earth, how much pride we carry, we are neither creator nor modifier. The restless Nature is modifying the Earth to explore all its mystery and colours it could possibly get.
The Earth is the kingdom of Nature.
We are just visitors and must remember our source of existence.