Marry or mingle: The risks and rewards of being single

For many people, Valentine's Day can be an isolating time. The dominant Valentine's Day narrative insists that to be in a romantic relationship is to be happy. And for many single people, the day can come with pressure to ...

Barcelona bans older, most polluting cars

Barcelona imposed a ban Thursday on older, more polluting vehicles during most of the day in a bid to reduce air pollution in Spain's second largest city.

Air pollution 'greatest risk' to global life expectancy

Air pollution cuts life expectancy for every man, woman and child on Earth by nearly two years, according to data released Tuesday which experts said showed poor air quality is "the greatest risk to human health".

Can poor air quality mask global warming's effects?

During the 20th century, the average temperature of the continental United States rose by almost 1 degree Fahrenheit (0.5 degree Celsius)—everywhere, that is, except in the Southeast. There, until the 1980s, the temperature ...

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