American men have half the sperm they used to
A review of 185 papers finds male fertility in developed countries has fallen over 50 percent in less than 40 years, with significant public health implications.
A review of 185 papers finds male fertility in developed countries has fallen over 50 percent in less than 40 years, with significant public health implications.
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Hispanics born in the United States often marry non-Hispanics, new research suggests. Meanwhile, the vast majority of Hispanics who immigrate do not intermarry.
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When your city or state needs cash for infrastructure, it probably issues a municipal bond. We explain how “munis” work.
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Some immigrant groups in the U.S. seem to be more successful than others. A new paper looks at how country of origin correlates with measures of personal success.
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A $1 increase in the minimum wage is associated with a 2 percent drop in the teen birth rate, suggests a new study in the American Journal of Public Health.
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Kids with attention-deficit hyperactivity disorder (ADHD) are more likely to develop drug problems, but standard treatments may reduce the risk, a new paper finds.
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A new paper examines “victimization by proxy” and finds European-born Muslims more likely than their immigrant parents to endorse radical ideology or violence.
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Lyme disease is spreading as the warming climate helps bloodthirsty ticks thrive.
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Teenagers from affluent suburban homes are more likely to abuse alcohol and drugs than the national average. Parental attentiveness is key to prevention, a new paper finds.
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Climate change is causing wildfires to consume ever-larger swaths of forest, scientists say, breaking records and blanketing many states in dangerous smoke.
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