A new kind of microscope is giving scientists a way to watch life inside cells with a clarity that feels almost unfair.

Using a tiny, spherical glass lens sandwiched between two brass plates, the 17th-century Dutch microscopist Antonie van Leeuwenhoek was the first to officially describe red blood cells and sperm cells ...

Diabetes doesn’t just coexist with heart disease - it actively reshapes the heart’s machinery and the way it makes energy.