Human cells grown in monkey embryos ‘raise ethical concerns’

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.

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