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Gene editing in human embryos could one day prevent some parents from passing on serious genetic disorders to their offspring — but only in rare circumstances should it be considered. And for now, the technique has not been shown to be safe or effective to use at all. That’s the conclusion of an expert panel, convened by the US National Academy of Medicine, the US National Academy of Sciences and the UK Royal Society, which has released a report about heritable human-genome editing. The group was formed following the shock announcement from genomics researcher He Jiankui who reported in November 2018 that he had created the first ‘CRISPR babies’.
Read more: CRISPR babies: when will the world be ready? (Nature | 14 min read, from 2019)
Amid escalating tensions between the United States and China, US authorities are increasing their scrutiny of links between researchers from China and the People’s Liberation Army (PLA). But with PLA fingers in so many pies — many of the top hospitals in China are affiliated with the military, for example — there are concerns that scientists might be unfairly accused of espionage. The extent to which US research is actually being funnelled to the Chinese military, and how to block it meaningfully and fairly if it is, remain unclear, say experts — as do the parameters that the United States is now using to label foreign scientists and collaborations as a threat.
Water, water, everywhere — but where did it all come from? To find out, planetary scientists looked to enstatite chondrite meteorites, which formed from the same building blocks that Earth did. The hydrogen contents and deuterium/hydrogen ratios of those meteorites suggest that most of Earth’s water could have been there right from our planet’s formation. This upends the idea that all of our water must have come from comets and asteroids that formed further from the Sun — beyond the ‘snow line’ in the early solar nebula where it was cool enough for water to remain liquid.
Features & opinion
While recruiting, how do you make your laboratory or department attractive to female candidates and others from marginalized backgrounds? Four female scientists with experience in the job markets in computer science, electrical and computer engineering, information science, cognitive science, public health, public policy and statistics share their top tips. They recommend inviting candidates to give a talk so that you can showcase what you offer, demonstrating by your actions how colleagues are treated in your workplace and not shoehorning clumsy mentions of diversity into your interviews.
To explore the tension between the contrasting realities of the general theory of relativity and quantum mechanics, theoretical physicist Paul Halpern finds inspiration in a relationship. In Synchronicity, he relates how Austrian physicist Wolfgang Pauli, distraught and drinking heavily after his divorce in 1930, sought out Swiss psychoanalyst Carl Jung for therapy. Jung, in turn, received a schooling in quantum physics.
Despite over a century of use, there’s a lot we don’t know about how anaesthetics function. This week, researchers have identified how some of them they bind to a specific neuronal receptor. Find out more in this week’s podcast, along with the latest science news.
This week our free-ranging penguin friend Leif Penguinson is enjoying the spectacular views at Salar de Atacama, the largest salt flat in Chile. Can you find the penguin?
The answer will be in Monday’s e-mail, all thanks to Briefing photo editor and penguin wrangler Tom Houghton.
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With contributions by Nicky Phillips