Obsidian is a kind of black glass formed when the heat of a volcano melts the silica material in sand.

VOA: special.2009.09.16

When the northeast sky turned black and threatening A storm was blowing over Iceland.

VOA: special.2010.05.08

Rosa Parks and three other black people were seated in the middle area of the bus when a white person got on the bus and wanted a seat.

VOA: special.2009.03.08

The Lady in Black looked at it. She remembered the wave of anger that had come over her when she had reached out her hand and silenced the clock that night three months before.

VOA: special.2010.05.15

"I think the one story that inspired this book was meeting a wonderful man called Don Mertin in New Zealand and he explaining to me how he had saved a species of bird called a Black Robin when there were just seven individuals left in the world of which only two were female and only one of whom was fertile."

VOA: special.2009.11.18

One said the Jackson family was regarded as royalty when she was growing up, but the singer's many plastic surgeries made some believe he hoped to obscure his black identity.

VOA: standard.2009.06.28

When they take the field against Brazil Friday at Cairo's International Stadium, the Black Satellites, as Ghana's Under-20 team is known back home, will be aiming for their first championship after two previous unsuccessful final appearances.

VOA: standard.2009.10.15