Cops use less respectful language when speaking to black drivers than white drivers, a new Stanford study found using computer algorithms.

Russ Gremel bought $1,000-worth of Walgreens stock 70 years ago. Now, the Chicago native is giving his entire fortune to protect wildlife.

Despite a national move away from celebrating Confederate figures, Alabama insists on continuing celebrations of the men who led the South.

As demand for big cats increases, animal sanctuaries are increasingly vulnerable to poachers.

The Mayor of Austin had some choice words for a man angered by women-only screenings at an Austin, Texas, movie theater.

A Swiss company has opened the world's first commercial facility that removes carbon dioxide from the air and then uses it to grow plants.

Hyalinobatrachium yaku, a new species of glass frog, has such clear skin that researchers can observe its tiny heart beat through its chest.

New Tiananmen Square photos, uncovered WWII bombers, Hemingway's love letters, Australia's faceless fish, Earth's mass extinction event.

A new study says that human activities are indeed altering the environment — by killing off swaths of it.

A revealing look at the African-American experience at the dawn of the 20th century.