Scientists now know how to drill deep enough to tap into an energy supply that would power the world for more than 20 million ...

Rare earth metals are making headlines as demand rises for products from smartphones to wind turbines, and as governments seek secure supply.

The radioactive elements are found most abundantly in ... denudational differentiation then combined in developing the earth's crust. We now find in the latter all those rocks which hold a maximum ...

The iron isn't pure—scientists believe it contains sulfur and nickel, plus smaller amounts of other elements ... beneath the Earth's surface. The crust is the outermost layer of the Earth.

Though hydrogen is the most common element in the universe (around 75% of the universe’s mass), it is rare on Earth, making ...

Atomic number 16, atomic weight 32.064. Silicon (Si): Silicon is the second most abundant element in the earth's crust and can be found in rocks, sand and clay. It acts as a deoxidizer in steel ...

Stable parts of the Earth's crust may not be as immovable as previously thought. While much of the crust is affected by plate tectonic activity, certain more stable portions have remained ...

About 700 million years ago, enormous glaciers flowed across the Earth's surface in powerful frozen rivers like "giant ice bulldozers" that pulverized our planet's crust and may have contributed ...

Rare earth metals are making headlines as demand rises for products from smartphones to wind turbines, and as governments seek secure supply.