Asthma cases in Americans are about 75% higher today than they were in 1980.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.
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Cyanide works by making the human body unable to use oxygen.
A sod house in North Dakota, 1896. Individual “bricks” of sod were hewn from the ground and stacked
The first commercially successful typewriter, manufactured in quantity beginning in 1874, surely fue
Velocity-time Graph
Proteins Are Made of Amino Acids
Over time, cells acquire mutations. Two independently acquired mutations in the same cell may be suf