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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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The horizontal fraction bar was introduced by the Arabs.

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It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

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Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Extent of agricultural activity across the planet (data from Foley et al. 2005). Extent of agricultural activity across the planet (data from Foley et al. 2005).
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Effects of Therapy for Stuttering A functional MRI scan shows regions of the superior temporal lobe Effects of Therapy for Stuttering A functional MRI scan shows regions of the superior temporal lobe
Inferring Productivity from Data on Output and Factor Accumulation Inferring Productivity from Data on Output and Factor Accumulation
Comparison of A-type Climates Comparison of A-type Climates
BMI Chart Weight Chart BMI Chart Weight Chart
Video: Knee Animation

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