Two enormous structures that sit at the border between the Earth's mantle and its core have puzzled scientists for decades.

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. How does the inside of the Earth stay boiling ...

New research suggests that Theia, the object whose collision with Earth is theorized to have caused the formation of the moon ...

Scientists have discovered a heartbeat-like pulse emanating from inside the Earth beneath the continent of Africa, which they believe will one day rip the continent into pieces. In a new study ...

For the first time, scientists have tracked volcanic tremors beneath Oldoinyo Lengai, a bizarre volcano in northern Tanzania. The results are surprising: even though its lava is extremely fluid and ...