Earth — so hot right now. The Earth’s surface temperature is rising thanks to human activities like burning fossil fuels, which adds heat-trapping greenhouse gases to the atmosphere.

It’s not much of a stretch to say that Earth’s inner structure, especially the innermost spherical core, has stupefied ...

The first layer is the crust, a thin outer shell that extends about 18 miles (30 km) below the planet's surface. The next layer, the mantle, stretches about 1,800 miles (2,900km) below Earth's ...