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.

Decision tree for buying a fitness tracker.

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.

Colliding crustal plates played a role in carving a steep river valley.

The U.S. only rates a "C" grade in reaching the goal of reducing premature births to 9.6 percent.

Facts about the zombie phenomenon in pop culture, movies and gaming.

If you are exposed to the deadly Ebola virus, this is some of what the CDC tells you to do.

Hospital workers must be careful to avoid contamination when removing their soiled protective gear.

From spinal stimulation to exoskeletons, technologies for overcoming paralysis have come a long way in the 10 years since Christopher Reeve died.

The science of biorobotics is informing the design of new robots.