The Kepler space telescope was launched by NASA to discover Earth-like planets orbiting other stars
The population pyramid is a representation of the age and gender composition of a given country.
Deforestation has a negative impact on the environment.
Remarkable civil engineering works to continue the Netherland's centuries-long fight against the...
Space probes and Mars rovers examine the structure of Mars and possible traces of life.
Farming consists of special agricultural activities.
There is a huge gap between the socio-economic conditions of the northern and southern...
Tourism is a significant sector of the economy that grows continuously all around the world.