Researchers used light-based technique to examine 195-million-year-old bone's chemical contents.
Alterations in the rock formations' growth in Indiana cave could provide clues about past earthquakes in the Midwest.
"Young" rocks from gigantic volcanic eruptions are helping scientists peer back 4.5 billion years.
In the 1960s geologists had to throw out their textbooks.
Wood-based products can behave like mini-earthquakes.
Research shows that magnetic fields played a role the solar system's formation.