Did you know?
Humans have been on the Earth for a very short amount of time.
•Hold your arm out straight.
•The length of your arm is the total age of the Earth
•The sliver of fingernail at the end of your middle finger is the amount of time that humans have existed!
If we squash the Earth’s 3.7 billion years existence into a single 24-hour day:
•The first human species appeared about 50 seconds before midnight.
•Modern humans (Homo sapiens) appeared roughly 2 seconds before midnight!
Here are our timelines!