Biology from first principles — not a parade of facts, but the why under each one. The chapters build in order: from the molecules inside a single cell, out to whole bodies, and finally to life in the wild. Read top to bottom and each one rests on the last.
Part I · Inside one cell
The molecular machinery — what a living cell is made of, and how the parts pull off the trick of staying alive and copying themselves.
Part II · Information & inheritance
How life copies itself across generations, where variation comes from, and how the same genome gets read differently in every cell.
Part III · Running the cell
Day-to-day operations — the boundary that defines a cell, the fuel that powers it, and the signals it uses to read its world.
Part IV · From cells to a body
How one cell becomes many that cooperate — building a multicellular organism and its two flagship systems.
Part V · Life in the wider world
Zooming out — the not-quite-living, life in populations and ecosystems, and where the whole thing began.