About
CoursesHub.World — Free University-Level Science
CoursesHub.World is a free, open-access education platform for graduate-level courses in the natural sciences. The site offers rigorous treatments of physics, biology, chemistry, mathematics and earth sciences, built around derivations, interactive simulations, and links into the primary literature. Every course is free and nothing is gated.
Who makes this
CoursesHub.World is written and maintained by Bart Mercier, an independent researcher working at the intersection of physics, biology and the earth sciences. It is a personal project, kept free and open — a place to learn graduate-level science from first principles, for anyone with a browser.
It exists because that place was hard to find. There is no shortage of excellent open material — MIT OpenCourseWare, decades of recorded lectures, the primary literature itself — but it is scattered, and stitching it into one coherent subject that builds on itself is work most people never get to do. The site is an attempt to do that work once, in public, and give it away.
Related work includes books in progress on the ocean–atmosphere system and on plasma physics, and Quantum Proteins AI, applying AI and quantum methods to the behaviour of proteins. Corrections and suggestions are genuinely welcome — the contact page reaches a real person.
What makes the site different
- Derivation-first. Course pages do not just state results — they derive them. Equations are typeset with MathJax, with full steps from first principles wherever possible.
- Interactive widgets. Browser-side simulations (membrane potentials, signaling cascades, ODE integrators, 3D molecular structures via the RCSB Protein Data Bank) accompany the text where they help build intuition.
- Cross-course coherence. Topics that appear across multiple disciplines (e.g., the TCA cycle in cell physiology / metabolism / cancer biology) cross-link consistently rather than re-explaining the same material.
- Open and free. No accounts required to read, and no advertising. Every course, every page and every runnable program is free, permanently. An optional subscription buys LaTeX-typeset PDFs of the course sections — it adds a format, it does not unlock the science.
Course catalogue at a glance
Physics
Quantum Mechanics, GR, Cosmology, Particle Physics, Statistical Mechanics, Waves & Optics, Classical Mechanics, Plasma Physics
Biology
Cell Physiology, Molecular Biology, Cancer Biology, Neuroscience, Biophysics for ~25 organisms, Stem Cells, Microbiome
Chemistry
Biochemistry, Pharmacology, Inorganic / Organic chemistry threads through the biology courses
Mathematics
Differential Equations, Statistics, Information Theory, Probability, Topology threads
Earth Science
Oceanography, Tectonics, Climate Science, Atmospheric Physics, Environmental Chemistry
ML & CS
Machine Learning, Bioinformatics, Quantum Computing, Information Theory
Browse the full course catalogue or use Explore.
Disambiguation
CoursesHub.World (this site) is unrelated to other entities that share the “Courseshub” name — including independent YouTube channels, social-media accounts, and unrelated education templates. We are at the canonical domain https://courseshub.world.
If you are looking for the natural-sciences course platform you arrived at through this URL or a direct link, you are in the right place.
Contact
Reach the site via the contact page or email contact@courseshub.world. Issues, suggestions, and corrections are welcomed.
License & use
Original course content on CoursesHub.World — the writing, the derivations, the diagrams and the runnable programs — is published under a Creative Commons Attribution-ShareAlike 4.0 International licence (CC BY-SA 4.0).
In plain terms: copy it, redistribute it, adapt it, build a course on top of it, commercially or not. Two conditions — credit Bart Mercier and link back to courseshub.world, and release anything you build from it under the same licence, so it stays as open as it arrived.
This covers the material written here. Embedded third-party resources — PDB structures, video lectures, textbook excerpts — belong to their original creators and keep their own licences; nothing on this page changes those terms.