On average, there's 100 billion neurons in the human brain.
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It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
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Gorillas can catch human colds and other illnesses.
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There are about 255 babies born worldwide every minute.
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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.
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A person can live without food for about a month, but only about a week without water.
156
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23