The results reveal that just as cold drinks lead to perceptions of social conditions being cold, tinkering with feelings of physical stability leads to perceptions of social instability.

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In one, the labor supply for jobs with physical skills increases and leads to a drop in wages.

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Every day, families across our country confront the tragic realities of Alzheimer's disease -- an irreversible, fatal illness that robs men and women of their cherished memories and leads to progressive mental and physical impairments.

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"Few other leads have shown as much promise as physical activity in extending the lives of cancer survivors, " said an editorial last year in the Journal of the National Cancer Institute.

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Curiosity leads us to discover new geographies, both physical and intellectual.

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If piracy leads to substantial sales displacement of music in physical format, then its effect on the overall music industry revenues may well still be negative.

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These range from the number of calories burned in sexual activity to the value of physical education classes to the notion that burning 3, 500 extra calories leads mathematically to a one-pound weight loss.

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Among individuals, team discord leads to stress, low job satisfaction, poor productivity, anger, despair, and physical ailments such as insomnia.

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The solutions have potentially huge cascading effects: Obviously, a more pedestrian-friendly infrastructure leads to fewer cars and less environmental pollution, but it also creates more opportunities for physical activity and socialization and, therefore, healthier and happier populations.

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