4 articles
Cells, DNA, evolution and the diversity of life on Earth.
Subtopics
The digestive system extends beyond its role in food processing. Often termed the "second brain," the gut contains a complex, autonomous network of neurons known as the enteric nervous system (ENS), which possesses the capacity to function independently of the central nervous system.
The nucleus holds almost all of an atom's mass; the electrons hold almost all of its volume. This article works through the three numbers behind that structure — the proton count Z that fixes the element, the mass number A that separates the isotopes, and the mass missing from ¹²C — using CODATA 2022, NIST and IAEA data.
It is not just about calories. Regular training thickens ventricular walls, raises stroke volume, improves endothelial function and lowers resting blood pressure.
A bacterial immune mechanism turned into a precise, cheap and fast gene-editing tool - now an approved therapy.
