Studies & Degrees in Earth Sciences
Earth Sciences Study Programs
Earth sciences study the planet as a physical system: the solid Earth, the oceans, the atmosphere and the way they interact. The US Bureau of Labor Statistics describes the work of geoscientists as studying the physical aspects of the Earth, such as its composition, structure and processes, to learn about its past and present and to predict future events. Geology is the core of the field. Around it sit geophysics, geochemistry, oceanography, atmospheric science, hydrology, palaeontology and planetary science. Duke University, for example, frames its Earth and Climate Sciences major around the solid earth, the hydrosphere, the atmosphere and the biosphere.
Students take mineralogy, geology and other sciences together with mathematics, and they spend a good deal of time outside the lecture room. Programmes usually include geological fieldwork, laboratory analysis of rock and water samples, and computer work with geographic information systems (GIS) and modelling software. The University of Washington lists scientific computing, laboratory techniques and field methods among the tools every graduate of its Earth and Space Sciences department should master.
Qualifications and levels
- Bachelor's degrees. In the United States a bachelor's degree is usually completed in four years of full-time study, and students choose a major. The names vary by university: the University of Washington offers a Bachelor of Science and a Bachelor of Arts in Earth and Space Sciences, the first aimed at geology and geophysics and the second at careers such as science journalism, environmental law, science education and environmental policy. The Scripps Institution of Oceanography at the University of California San Diego offers a BS in Geosciences and a BS in Oceanic and Atmospheric Sciences. Purdue University lists majors in atmospheric science and meteorology, environmental geosciences, geology and geophysics, and planetary science.
- Europe and Spain. A bachelor's degree has 180 or 240 ECTS credits, at 60 credits per full year; in Spain a bachelor's degree (grado) has 240. The Universidad de Cádiz teaches bachelor's degrees in Ciencias del Mar and Ciencias Ambientales at its Facultad de Ciencias del Mar y Ambientales in Puerto Real.
- Master's degrees and doctorates. A master's degree usually has 90 or 120 ECTS credits in Europe and 60, 90 or 120 in Spain. Postgraduate study brings specialisation, for instance in hydrogeology, geophysics, petroleum geology or climate science, and a doctorate is the normal route into research.
- Accreditation in the United Kingdom. The Geological Society of London runs an accreditation scheme for first degrees in geoscience, launched in 1997 and awarded to over 200 programmes, and a second scheme for taught MSc programmes, introduced in December 2006. Accreditation is granted for six years, and the Society states that an accredited degree is directly relevant to a later award of Chartered Geologist or Chartered Scientist status.
Where to study Earth sciences
SpainExchange lists 96 active schools for Earth sciences. The United States has 58, the United Kingdom 8, and Spain, Canada and Germany 4 each, followed by Sweden with 3 and Australia, Ethiopia, Switzerland and France with 2 each. The list ranges from large research universities such as Stanford University, the Massachusetts Institute of Technology, The Pennsylvania State University and the University of Michigan to community colleges such as Tacoma Community College.
Most programmes are taught in the language of the country. When comparing them, look at how much fieldwork is included and who pays for it, which specialisations are available in the final years, whether the department has its own laboratories or research vessel, and, in the United Kingdom, whether the degree is accredited by the Geological Society.
Careers
Graduates work as geologists, geophysicists, hydrologists, oceanographers, seismologists and environmental consultants, and in mapping, natural hazard assessment and resource exploration. According to the US Bureau of Labor Statistics, geoscientists held about 25,400 jobs in the United States in 2025. The largest employers were architectural, engineering and related services (27 percent) and mining, quarrying, and oil and gas extraction (17 percent), followed by consulting firms and state and federal government.
The Bureau states that geoscientists typically need a bachelor's degree to enter the occupation, that some employers prefer a master's or doctoral degree, and that most US states require a licence for geologists who offer services to the public. It projects employment of geoscientists to grow 5 percent from 2025 to 2035, faster than the average for all occupations, and links demand to energy, environmental protection, and land and resource management. These figures apply to the United States; licensing and professional titles differ in every country.
Frequently asked questions
What is the difference between geology and Earth sciences?
Geology studies the materials, processes and history of the solid Earth. Earth sciences is the wider field and also covers the oceans, the atmosphere and, in some departments, other planets.
How long does an Earth sciences degree take?
A US bachelor's degree is usually completed in four years of full-time study. In Europe a bachelor's degree has 180 or 240 ECTS credits, which is three or four years, and in Spain a bachelor's degree has 240 ECTS credits.
Is there a lot of fieldwork?
Usually, yes. Geoscience programmes normally include geological fieldwork alongside laboratory and computer work. Ask each school how many field days the degree includes and what they cost.
Do I need a master's degree to work as a geoscientist?
Not always. In the United States a bachelor's degree is the typical entry requirement, although some employers prefer a master's or doctoral degree, and research posts normally require a doctorate.