Rocks are categorized into three main types: igneous, sedimentary, and metamorphic. There are over 4,000 identified minerals on Earth. Common rocks include granite, basalt, limestone, and sandstone.

Robbers used explosives to force open a door at a Dutch museum early Saturday morning, stealing several gold masterpieces, museum officials said in a statement. Police received a report at 3:45 a ...

She recalled that the band—hard rock influenced by grunge, nu metal, and arena pop rock, with songs like “Locked in a Cage” and “Dive Over In”—scratched the itch of relatively tame ...