is a scientific
discipline that spans a wide variety of sub-disciplines, which amount to the study of the construction, formation and processes of the Earth
(along with other terrestrial bodies). Draws from the subjects of geochemistry, petrology, geomorphology, geophysics, palaeontology, crystallography, geography, seismology, geotechnical engineering and a wide variety of other fields. Other terms used to describe it include geoscience and geology, although the latter is viewed as slightly old-fashioned by many modern earth scientists. Vitally important to modern society
, as earth scientists locate and evaluate important minerals, e.g. gold, copper, aluminium, and also play a massive part in the search for oil and its exploitation. They also play an important part in ensuring the safety of mankind, e.g. volcanologists, geotechnical engineers. There is also massive amounts of research going on in earth science.
The oil and metals used to make my computer would have been located by earth scientists; the stability of the land beneath my house is likely to have been evaluated by someone with geotechnical training; the petrol used in millions of cars every day would have come from oil located by a geophysicist.
That's just how important earth science is!