All the water and air on earth gathered into spheres and compared to the Earth

Credit: ADAM NIEMAN / SCIENCE PHOTO LIBRARY Fantastic post on Boing Boing showing a computer simulation of all the water on the earth(left hand side)- which includes sea water, clouds, glaciers, underground water etc. On the right is all the air on earth. Both these images represent water and air at the same scale as the earth. As explained on the science photo website:

Global water and air volume. Conceptual computer artwork of the total volume of water on Earth (left) and of air in the Earth's atmosphere (right) shown as spheres (blue and pink). The spheres show how finite water and air supplies are. The water sphere measures 1390 kilometres across and has a volume of 1.4 billion cubic kilometres. This includes all the water in the oceans, seas, ice caps, lakes and rivers as well as ground water, and that in the atmosphere. The air sphere measures 1999 kilometres across and weighs 5140 trillion tonnes. As the atmosphere extends from Earth it becomes less dense. Half of the air lies within the first 5 kilometres of the atmosphere.