Got a floaty feeling? Well, it's not something you ingested and it's not your imagination. Almost all of the Earth's continents are above sea level because they float on molten material beneath the Earth's crust. That's the word from geologists at the University of Utah.
But their stunning conclusion: it's heat from inside the Earth that keeps most of North America afloat. They say the rocks of the Earth's crust are heated from beneath by molten rocks. That makes the crust not only hotter but less dense, thus it floats higher. Without this … Read more