Remy Melina

Acclaimed oceanographer Sylvia Earle went on an expedition to Hawaii's Midway Atoll National Wildlife Refuge to promote environmental education.

Photos from acclaimed oceanographer Sylvia Earle's expedition to Hawaii's Midway Atoll National Wildlife Refuge.

From stunning stone sculptures to strategically placed leaves, we've rounded up a gallery full of amazing environmental art.

Two areas of the brain responded differently in youth with a family history of alcoholism during risky decision-making, a new study shows.

The brain quickly adjusts when a person uses a sling or cast after injuring their arm, a new study shows.

During the first 24 hours after the death of a loved one, a person's risk of experiencing a heart attack increases by about 21 times, according to a new study.

The number 13 is synonymous with bad luck, but is there any statistical proof to support the superstition?

A new tool relies on weather conditions and bat calls to keep bats safe.

An analysis of ancient Mayan artifacts revealed the first physical evidence of tobacco use from a Mayan container, according to a new study.

A study of nearly 12,600 people found that low vitamin D levels contribute to symptoms of depression.

A new species of black-and-yellow bush viper was discovered in southern Tanzania.

A pneumonia outbreak wiped out as much as 20 percent of the markhor population in Tajikistan, Central Asia, a new study shows.

An innovative pretzel-shaped surgical tool was used by a leading veterinary surgeon to carry out a biopsy on a sick Asian Golden Cat at a zoo.

From wasps with reindeerlike antlers to an insect that resembles a cinnamon stick, these bugs are naturally decked out for the Christmas season.

Kids get it that a cheery perspective is self-fulfilling.

The trees responsible for the fragrant resin are declining rapidly.

Online youth exposure to unwanted sexual solicitations and pornography has declined, a new study shows.

Forty percent of police officers suffer from sleep disorders that may be hazardous, a new study shows.

People who successfully quit smoking are more satisfied with their lives and feel healthier than those who continue to smoke, a new study shows.

Photos of beautiful snowy landscapes from around the world.

Adding a cheaper "stocking stuffer" to an expensive present actually diminishes the perceived value of the overall package in the recipient's eyes, a new study shows.

Cigarette and alcohol use among eighth, 10th and 12th-graders is at the lowest point since the 1970s, according to a new survey.

From tigers to pandas, here's a gallery of animals frolicking in the snow.