Stories by L. S. Penrose

Fingerprints and the similar ridges on the palm of the hand and the sole of the foot have more uses than identification: they are also of value in anthropology, medicine and genetics

In which simple units are built which assemble themselves into larger units, which in turn make copies of themselves from other simple units. The process sheds light on the self-reproduction of biological molecules

Human fertility: a big subject with some journalistic pitfalls