xMoho : The boundary between the crust and the mantle in the earth. This is a depth where seismic waves change velocity and there is also a change in chemical composition. Also termed the Mohorovicic' discontinuity after the Croatian seismologist Andrija Moh
Air pollution can get high in the atmosphere – high above most of the clouds you see in the sky. Scientists are finding air pollution like black carbon, sulfur dioxide, and nitrogen oxides more than 2...Read more