Lightning is a sudden electrostatic discharge accompanied by a sound known as thunder.
It is a sedimentary rock with high calcium carbonate content.
Developed nearly 500 years ago, it is a variant of the Julian calendar. Today it is the most...
The deepest lake in Earth was formed in a rift valley created by the Baikal Rift Zone.
Karst formations include dolines and dripstones.
The four outer planets (Jupiter, Saturn, Uranus and Neptune) do not have solid surfaces, thus...
Bauxite is a raw material in aluminium production. Watch this video to learn how the well-known...
Icebergs are blocks of frozen freshwater floating in the sea.
A glacier is a large body of ice in constant, slow motion down a hillside.