I wake up to the sound of the wind buffeting the cloth of my tent. Even though the sun is brightly shining, telling whether it is morning or night is
Sarek’s mountains used to be covered by vast sheets of i
The Great Wall twists and turns a
The Great Wall at Badaling o
To their credit the four countries
England is the largest of the four countries, and for,
The Earth is made up of three layers. In the centre is the core, which is as big as the Mars and has a high
The crust is made up of tectonic plates. These huge plates are moved slowly by magma currents below, sliding past each other with