The human brain uses approximately as much energy as a 10 watt light bulb.
120
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
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
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
All 13 minerals necessary for human life can be found in alcohol beverages.
282
On average a woman has 4 sexual partners in her lifetime.
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