LifeMaking babies: How to create human embryos with no egg or spermArtificial wombs and embryos made from skin cells – remarkable new techniques could revolutionise reproductive biology and help bring an end to infertilityFeatures
LifeHow birds focus even with eyes on opposite sides of their heads Birds find it difficult to fix their gaze on an object, because their eyes don’t face forwards, but one species has found an ingenious solution News