Like Don's stack of fish-wiches, this globe shows us the layers that make up our Earth-- the thin, solid outermost layer, the crust, the denser, deeper layer, the mantle, and, finally, the really ...

Discover a vast, previously unknown world of microbial life that survives—and even thrives—for hundreds of millions of years ...

There is more to the Earth than what we can see on the surface. In fact, if you were able to hold the Earth in your hand and slice it in half, you'd see that it has multiple layers. But of course ...

As Song explained, the Earth's inner core has a "dynamic" relationship with two of Earth's major layers. First, there is an electromagnetic coupling with Earth's outer core.