"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.
Evidence of life could be preserved in blades of salt crystals on the Red Planet.
The "Big One" may be many smaller ones.