Nature highlights three key infographics from the week in science and research.
The pandemic has taken a grim toll on society, but working out exactly how many people have died is very complex. Records of excess mortality — a metric that involves comparing all deaths recorded with the number expected to occur — are not always reliable or complete.magazine has used a machine-learning approach to produce an estimate of between 12 million and 22 million excess deaths — or between two and four times the pandemic’s official toll so far.
PhD students trying to work out their next career step are more likely to turn to the Internet and independent research than rely on advice from supervisors or other researchers, as these survey results show. who want to offer better advice to junior colleagues — particularly about pursuing non-academic careers. That’s important, because intense competition means that the vast majority of PhD students won’t end up in academic positions.A chiral molecule exists in two forms, called enantiomers, that are chemically identical, but are mirror images of each other.
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