When a person has black or dark-colored mucus, they may have inhaled potentially harmful pollutants. Coughing up black mucus may also be due to an underlying infection or condition. Mucus serves ...

Black holes are some of the most fascinating and mind-bending objects in the cosmos. The very thing that characterizes a black hole also makes it hard to study: its intense gravity. All the mass in a ...

The following is an excerpt from Black Fortunes: The Story of the First Six African Americans Who Escaped Slavery and Became Millionaires, by Shomari Wills, which details the origins of Black Wall ...