The BBC brings you all the week's science news.
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Gravity and ripples in the fabric of space time - what do these mean for us?
See stories about the future of space on the World Service English YouTube channel
Is the heatwave in Siberia evidence of climate change?
The US manufacturer of remdesivir is charging as much as $3,000 per treatment
Acute effects of Covid-19 in children include a reddening of the skin and inflammation
A new weekly testing method using ‘no swab’ saliva tests is being piloted in the UK