cells

The complete guide to biology in 2026: cells and genetics, evolution, the human body, neuroscience, disease, immune systems, and the future of genetic engineering.

DNA is the blueprint, but proteins do the actual work of life. Here's how your cells read a genetic message and build the molecular machines that make you function.

Hidden alongside your blood vessels runs a parallel network most people barely know exists. The lymphatic system is your body's drainage service, immune checkpoint, and cancer pathway all in one.

Every move you make, every thought you think, every protein your body builds is paid for in one molecule. ATP is less a battery than a coin that is spent and reminted constantly.

Every second, millions of cells in your body divide with stunning precision. Here's how they copy themselves — and what happens when the process goes wrong.