The horizontal fraction bar was introduced by the Arabs.
Did you know?
Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
The life cycle of a zygomycete, the black bread mould Rhizopus stolonifer.
The seed-to-seed life of flowering plants.
Lycophyte Life Cycle
Gossip and ridicule increase the status insecurity of this time of life.
Paul Cézanne, Still Life with Cherries and Peaches.
The Life Cycle of a Midlatitude Cyclone: Cyclogenesis