Lightning is a sudden electrostatic discharge accompanied by a sound known as thunder.
Sahara sand carries nutrients essential for the Amazonian flora.
A video on the geological formation and geographical divisions of Africa.
Groundwater and aquifers are types of underground waters.
Bauxite is a raw material in aluminium production. Watch this video to learn how the well-known...
The Wallace line divides the fauna of Asia and Australia.
Short-lived but extremely powerful tornadoes can cause a great deal of damage.
Tropical rainforests play an important role in regulating the Earth climate.
The Andes were formed by the collision of two tectonic plates, one oceanic and one continental.