An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Our brains have a negativity bias and will remember bad memories more than good ones.
15
Your thumb is about the same size as your nose.
124
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
Your heart will pump about 212 million liters in its lifetime.
26
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15