I think it would be hard to overstate the impact of Linux and free software. I do climate science research and its pretty obvious that every single paper that contains an important finding was built on FOSS. Latex, Linux, python, all the gnu tools, and so much more. Imagine being a researcher who needed to write any of that, or pay for all of that, in order to work. It's incredible. Thanks to everyone who codes, builds, or contributes to such projects.
Also, it's laughable how little that is recognized in the science community.