Earth's interior is made up of a series of layers that sit below the surface crust. In order of depth, these layers include the solid, but flowing mantle, the liquid outer core and the solid iron ...

TASS/. Scientists have found living bacteria from outer space on the surface of the Russian segment of the International Space Station (ISS). They are being studied on Earth but most likely they ...

The papilli grow upward but become lopsided and flattened because the cells on the anterior outer surface multiply faster than those on the posterior inner surface. The stratum corneum gets thicker ...