The devices have the potential to accelerate drug discovery, crack encryption, speed up decision-making in financial transactions, improve machine learning, develop revolutionary materials and even address climate change - and that barely scratches the surface, researchers say. But enthusiasts aren’t concerned - and researchers say development is proceeding better than expected. “They’re all terrible,” says physicist Winfried Hensinger of the five he owns (he’s working on a new large-scale, modular type). Nature | 5 min read Features & opinion Quantum computers: terrible and awesomeĮven the scientists who have made quantum computers their life’s work say they can’t do anything useful - yet. Observers predict that the council will ultimately be forced to forge a new relationship with the government: “I think the SCJ will have to find a way of existing as an organ within the government, while being independent,” says policy researcher Hiroshi Nagano. The government has already backed away from plans to reform the council’s constitution and its process for appointing members. Japan’s government is drawing fresh ire from researchers over plans to privatize the country’s influential science council (SCJ). Nature | 7 min read Japan wants to privatize its science council The Chinese government has also proposed adding CRISPR gene editing, crop breeding and photovoltaics techniques to its list of technologies whose export is prohibited or restricted. Unlike the European Union’s data protection regulation, the law has no exemption for scientists. China’s largest academic database has partially suspended foreign access, and institutions that send, for example, clinical-trial data abroad must now undergo a security assessment. “The signal has been very clear that China does not want its scientists to collaborate as freely as they used to with foreigners,” says sociologist Joy Zhang. Reference: Nature paper China’s data privacy laws deter researchersĬhina’s new data restrictions have strengthened privacy but are concerning researchers globally. Go deeper with an analysis by heart development experts in the Nature News & Views article (6 min read, Nature paywall) Human breast milk also contains ɣ-linolenic acid, and a precursor is found in baby formula, although it’s unclear whether it has the same role in humans. After seven years of experiments, some of which involved milking mice by hand, researchers now zeroed in on ɣ-linolenic acid as a key compound that drives the switch, and identified the receptor and genes involved.
Mouse embryos’ heart-muscle cells burn sugar and lactic acid, but within 24 hours of birth, they shift to fatty acids as their fuel. Reference: Nature paper Baby mice hearts mature with mother's milkĪ component in their mother’s milk triggers a diet switch in baby mice’s heart cells.
“The stimulation before was controlling me and now I am controlling stimulation by my thought,” he says.
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This brain–spine interface gives Oskam full control over the stimulation, so he can walk and climb stairs. He has now received head implants that detect brain activity and transmit the signal to a backpack computer, which decodes the information and activates the spinal pulse generator. Gert-Jan Oskam, whose legs were paralysed after a cycling accident, received a spinal implant in 2018 that generated robotic movement through pre-programmed electrical stimulation. Nature | 6 min read ‘Digital bridge’ allows paralysed man to walkĪ wireless connection between the brain and the spinal cord allows a paralysed man to walk using his thoughts. Scientists hope to detect the gravitational signal of a collapsing star before it manifests as a supernova explosion, as well as the continuous gravitational waves produced by a pulsar. Improvements to the detectors’ sensitivity mean that LIGO could pick up signals of colliding black holes every few days, compared with once a week during its previous run. The first detection of gravitational waves - ripples in space–time from colliding black holes and other cosmic cataclysms - was made at LIGO in 2015. The Laser Interferometer Gravitational-Wave Observatory (LIGO) is back after a three-year hiatus and a multimillion-dollar upgrade. Credit: The SXS Project LIGO is back, and better than ever LIGO can detect gravitational waves that are generated when two black holes collide.
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