How science is getting closer to a world without animal testing

Could miniature human organs be key to ending the contentious practice? Animal testing was once believed to be the only acceptable way to determine whether new drugs are safe and effective for human use. However, as scientists gain a better understanding of human biology, questions have been raised about the reliability of animal models. Therefore, as Clive Cookson, Hannah Kuchler and Joe Miller reveal, a breakthrough technology involving lab-grown human organs could revolutionise the medical field.