Our description of how the atomic nucleus holds together has up to now been entirely empirical. Arduous calculations starting from the theory of the strong nuclear force provide a new way into matter's hard core.

A population-genetic model indicates that if there is a gene responsible for homosexual behaviour it can readily spread in populations. The model also predicts widespread bisexuality in humans.

The project for producing a genome-wide atlas of gene expression in the mouse brain shows how, with advancing technology, huge volumes of data can be collected and made accessible through the Internet.