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Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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Excessive alcohol use costs the country approximately $235 billion every year.

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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

On average, the ratio of carbon to nitrogen is much higher in terrestrial plants than in other major On average, the ratio of carbon to nitrogen is much higher in terrestrial plants than in other major
The Upper Troposphere: Westerly Winds in the Upper Atmosphere The Upper Troposphere: Westerly Winds in the Upper Atmosphere
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Atmospheric carbon dioxide concentrations in ppm Atmospheric carbon dioxide concentrations in ppm
Carbon-11 is used in medical imaging. The half-life of this radioisotope is 20.4 min. What ... Carbon-11 is used in medical imaging. The half-life of this radioisotope is 20.4 min. What ...
What amount was invested 35 years ago at 7% compounded semiannually if the value of the ... What amount was invested 35 years ago at 7% compounded semiannually if the value of the ...
Video: Cataract

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