How does the Oxford vaccine work?, Space X sea cartographer satellite goes to space & K-pop's aespa launch AI avatars

AstraZeneca and Oxford University report their vaccine could prevent up to 90% of people getting Covid-19, so how does it work? And, while we wait for the jab to be rolled out, scientists warn that as we head into winter, keeping a window cracked open could reduce the risk of infection by 70%. Plus, Space X launch a sea cartographer satellite and, K-pop band aespa introduce fans to their AI avatars.

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