Maanvi Singh

According to the facial feedback hypothesis, the simple act of putting a smile on your face can boost your mood. But recent research shows pasting on a grin can have mixed results.

A new study on maternal mortality finds that the death rate is up to 50 times higher in many African countries than in high-income countries.

A growing body of research shows keeping a log of what you are thankful for can lower stress, help you sleep better, and may even reduce the risk of heart disease. But it's not for everyone.

No longer do kids with concussions need to sit in dark rooms for days on end. For the first time in nearly a decade, the nation's pediatricians have loosened their guidance on concussion recovery.

The disease is hard to diagnose. And stage 2 patients have faced a week of infusions that can cause additional suffering. Now there's a new option.

There could be an upside to your phone addiction. Games like Tetris can reduce anxiety, according to new research. So if you've got Election Day jitters, go ahead and launch that app.

Hmong immigrants began losing native bacteria in their guts soon after arriving in the U.S., a change associated with more obesity. Eating an American diet plays a role but doesn't explain everything.

The authorities don't always listen. Women may be afraid to speak up. Around the globe, apps are giving them a place to document harassment on the streets.

Photographer Anush Babajanyan discovered an unusual belief about twins when she visited the Ivory Coast.

Black and white pictures were popular when Raghubir Singh started out as a photographer. But he insisted on color. A new retrospective shows his ground-breaking work.