"The earth is my mother, and on her bosom I shall repose." Attributed to Tecumseh in the early 1800s, this statement is frequently cited to uphold the view, long and widely proclaimed in scholarly and ...

Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the ...

The Earth's interior is composed of four layers, three solid and one liquid—not magma but molten metal, nearly as hot as the surface of the sun. The deepest layer is a solid iron ball ...