How can this pendulum accurately measure time in seconds?
How can sound waves be detected in the air?
Red-green colour deficiency is a genetic condition.
A video on the geological formation and geographical divisions of Africa.
A film about three great apes found in Africa: the chimpanzee, the bonobo and the gorilla.
Mutualism is a relationship between individuals or populations of different species that...
Due to its location, the Kalahari basin has a unique climate, flora and fauna.
Migrating nomadic shepherds are still living around the Great Rift Valley in East Africa.
The Great Rift Valley in East Africa was formed as a result of the movement of tectonic...
The Foucault pendulum is a device used to demonstrate the rotation of the Earth.
The boundary of the permanently frozen region is retracting due to global warming.
Sahara sand carries nutrients essential for the Amazonian flora.
The Atacama Desert is the highest-elevation and dryest desert on Earth.
This experiment models the formation of earthquakes.
A cuboid is a polyhedron with six rectangular faces.