Add Yahoo as a preferred source to see more of our stories on Google. (Getty Images/iStockphoto) A new study adds evidence to the theory that Earth hosts a sixth ocean miles beneath our feet. The ...

A massive fault beneath Sulawesi, Indonesia, has been confirmed to extend offshore as a continuous deep fracture through ...

Modern continental rocks carry chemical signatures from the very start of our planet's history, challenging current theories about plate tectonics. Researchers have made a new discovery that changes ...