STEM subjects are the most likely route for anyone interested in environmental studies, energy or geology. STEM subjects go very well with foreign languages as you acquire a strong combination of science and communication skills you can use in this fully global industry. Language skills will give you an advantage in accessing research, networking and working with international teams. You are very likely to have colleagues and peers with international backgrounds.
Earth scientists will have to travel to study and work on exploring the planet, be it collecting data in the oceans or researching volcanos. Energy sector is an international cutting edge activity as we have to develop new energy sources in the era of climate change. Geologists spend time on field trips, and will need to communicate with international teams.
University of Cambridge has published findings which indicate that scientists are actually missing on new research because over a third of new conservation science is published in languages other than English. They suggest publishing key summaries in multiple languages in order to help the community not to overlook or miss important scientific information. Not everything important is published in English. Relevant information about local species, habitats and ecosystems or diseases could pass the community by because it is assumed English is enough. Changes in the ecosystem in one part of the world will influence other parts of the globe, hence relevant information should be accessed in foreign languages.
Our planet is the most amazing thing to study, to learn from and to work with. If you have language skills you have more opportunities to access the community and the information.