‘Old people smell’ is actually caused by a chemical, 2-nonenal, that old people secrete through their skin
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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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Women have a slightly higher average IQ than men.
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Intelligent men tend to be more sexually faithful.
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2% of Europeans lack the genes for smelly armpits.
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There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
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