Did you know that Huizilopochtli was dressed with hummingbird feathers on his head?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
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 more than 20 miles above the surface of the Earth. That’s in the stratosphere...Read more