Planet Earth: Missing Chromium Is Clue to Planet Formation

Early in the formation of Earth, some forms of the element chromium separated and disappeared deep into the planet's core, a new study...Read More

Water Was Present During Birth of Earth, Study of Silver Suggests

Tiny variations in the isotopic composition of silver in meteorites and Earth rocks are helping scientists put together a timetable of how our planet was assembled beginning 4.568 billion years ago. ... Full Story

Colo. bill would legalize gold, silver currency

(CBS News) DENVER - Colorado State Senators will consider a bill that would allow people to use gold and silver as currency. A similar measure is already in place in Utah and is being considered in 12 other states, reports CBS Station KCNC. Supporters are concerned about the strength of the U.S. dollar. Full Story