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Surveys of 50,000 people found that those who smoked marijuana had sex more often than those who abstained from the drug. What is unclear is whether other factors explain the apparent link.

Religion offers answers to big questions about life and death, right and wrong, and who we are. But some unaffiliated parents are finding power in not knowing those answers.

A committee of experts examined about a dozen different synthetic biology technologies that could be potentially misused. For each, they considered how likely it was to be usable as a weapon.

Mexico's immigration battle with the U.S. plays out in the news daily, but a more subtle tension over cultural identity took center stage this week: foreigners taking leading roles in Mexican theater.

Gary Shteyngart's spectacular, sprawling new comic novel centers on a billionaire businessman, who, on the verge of ruin, embarks on a cross-country trip aboard a Greyhound bus.

Medicare pays more than $16 billion a year for hospice services. But a new report from the Department of Health and Human Services says hospice patients don't always get the care they're promised.

From fans and misting water to creating a whole new breed of cow, farmers and researchers are fighting rising temperatures to keep the dairy industry from losing millions of dollars to "heat stress."

Positive Tomorrows in Oklahoma City addresses education and other basic needs for homeless students and their families.

The country's changing attitudes are highlighted by the annual dog meat festival in Yulin City. The government issued a ban on dog meat sale, then promptly reversed it.

A study of seven popular fitness trackers found they are generally good at measuring heart rate, but may mislead consumers about how many calories they have burned.