Wastewater analysis could provide localised Covid-19 test results much earlier than at present.
The launch of Nasa's Mars rover Perseverance is delayed again to 30 July at the earliest.
Phil Evans, formerly at the UK Met Office, will be the new director general of Eumetsat.
A Swedish study found twice as many people had protective T-cells as tested positive for antibodies.
British firms fail to win leading roles in the expansion of the Copernicus Earth observation project.
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