Dehradun, July 21 -- Magma flowing out from the Earth

All Around the World with the Most Travelled Indian

I was always fond of the big picture, of the really major features and forces of nature on Earth. And simply the biggest of them all in my view is the force moving the land below our feet and we prosaically call it Plate Tectonics. As a quick school geography refresher, our imperfect blue sphere called Earth goes to a depth of almost 6,400 kilometres, right upto the solid inner core. The inner core is covered by the outer core, and then comes the lower and upper mantle and finally the outermost layer called the crust. We also use the terms lithosphere and asthenosphere when explaining the topmost layers. The lithosphere, where tecto...