Subterranean ‘supercontinents’ reveal intriguing new clues to what’s happening beneath Earth’s surface

Research on hidden structures deep within Earth’s mantle challenges theories about our planet’s middle layer and could transform our understanding of plate tectonics.

​ Research on hidden structures deep within Earth’s mantle challenges theories about our planet’s middle layer and could transform our understanding of plate tectonics. Read More Breaking News, Latest News and Videos | CNN