Even today, decades after Fortran 90/95 and modern languages like Python and Julia have taken over, the search term remains surprisingly popular. Why? Because legacy code runs the world. From weather forecasting models at NOAA to high-energy physics simulations at CERN and financial risk analysis on Wall Street, millions of lines of Fortran 77 code are still in production.

If you're taking a Fortran course that requires a more modern version of the language or if you'd like help finding the right book for you, just let me know—I'm happy to help you search!