Sex cells made from scratch could revolutionize human reproduction. But researchers are struggling to translate promising results in mice into benefits for humans.

‘Placental organoids’ may help research into the early stages of pregnancy and life-threatening conditions like preeclampsia.

Chimpanzees’ turn-taking shows skills that may have supported the evolution of human conversation.

Transposable elements are abundant in host genomes but are generally considered to be confined to the cell in which they are expressed, with the notable exception of endogenous retroviruses. Here, we ...