It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
There's a guy named Fire Penguin Disco Panda.
26
Women who are romance novel readers are reported to make love 74% more often with their partners than women who do not read romance novels.
136
Only about 2% of the world population has green eyes.
36
One million Americans, about 3,000 each day, take up smoking each year. Most of them are children.
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