Two researchers are impressed with a pioneering study showing that it may be both safe and effective to edit out diseases in human embryos.
Most people don't know if they have a hidden extra organ. But they're surprisingly common and often harmless.
Taking the placenta as a case study, researchers are able to piece together how new organs evolve, by repurposing old tissues and using them to do new jobs.
Researchers at a fertility clinic in Athens appear to have reversed the menopause in a small group of women – but will the science stand up to scrutiny?