Earth is 4.5 billion years old.
Life has existed for the last 3.4 billion years.
It is predicted the last animals will disappear in less than half a billion years from now. Life (diversity) on Earth is already in decline.
If 4.5 billion years was a 24-hour clock, then:
- Complex life (Cambrian) doesn’t start until 22:00 hrs.
- Dinosaurs start at 23:00 hrs.
- – And Homo Sapiens have existed for 2 seconds.
If 4.5 billion years was a mountain as high as Everest. My life is the height of the last snowflake at the top of the summit.
(From The Life And Death of Planet Earth. Peter Ward & Donald Brownlee.)