Scientists have grown human cells in monkey embryos. Researchers from the Salk Institute in California have produced what’s known as monkey-human chimeras, but some ethicists are raising concerns, saying this type of work “opens Pandora’s box to human-nonhuman chimeras”, plus previous coronavirus infection ‘doesn’t fully protect young people against reinfection’, scientists calculate how many billions of T-rexes roamed the Earth and, live 3D holograms are allowing friends kept apart to dine together again. Listen to our other podcasts:Women Tech Charge: interviews with incredible women leading in Science, Technology, Engineering and MathsThe Leader: a daily news podcast helping you make sense of the day’s most important stories Ask your Smart Speaker to ‘play the news from the Evening Standard' Visit standard.co.uk/tech for more tech news Hosted on Acast. See acast.com/privacy for more information.

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