Infographics

Typical batteries are powered by a chemical reaction.

A United Nations study shows that the United States ranks 15th in happiness.

Price, wireless connectivity, operating system compatibility, number of users and apps for selected smart scales.

Scientists study ancient trees to learn about past droughts.

A study finds that language is skewed toward happy words.

Nasal discharge can be an indicator of health.

A diverse panel of experts recommend new, age-specific sleep suggestions.

A researcher has found that historical estimates of some of the largest ocean creatures are not correct.

A study found out you're more likely to die if you are a cartoon character, than if you are an adult drama character.

For the first time, the movements of a wild hammerhead shark were tracked for a period of 10.5 months.