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| The ice at Mars's poles or the carbon dioxide in its atmosphere could be chemically transformed to release oxygen for future astronaut missions. (NASA/JPL-Caltech/MSSS) | |||||
Robot chemist could make oxygen on MarsA robotic chemist powered by artificial intelligence (AI) can make oxygen from water using only materials found on Mars's surface. The refrigerator-sized machine separated and analysed ore from Martian meteorites, and then found an effective oxygen-generating catalyst among the more than three million possible compounds — all without human intervention. A similar robot could be sent to Mars to remove the need for astronauts to carry oxygen, or the materials to generate it, from Earth. Nature | 4 min readReferences: Nature Synthesis paper | |||||
First trial of base editing in humansThe first human trial of a precise CRISPR gene-editing technique called 'base editing' has shown promise for lowering levels of 'bad' cholesterol. Base editing switches off a gene in the liver that regulates low-density lipoprotein (LDL), a key contributor to heart disease. In ten people with a life-threatening inherited disease that causes high LDL, a one-time injection reduced cholesterol levels by up to 55%. But there are safety concerns: two trial participants had heart attacks — although a review found that at least one of them was not related to the treatment. Nature | 5 min read | |||||
Rats can 'reminisce' about another placeRats can navigate in a virtual-reality system using only their minds. The finding suggests that the animals have the ability to access a mental map of somewhere they've been before. First, researchers trained rats to scamper through a virtual arena by running on top of a spherical treadmill, and then recorded the rats' brain activity as the animals wandered. When the treadmill was disconnected, the rats had to 'imagine' the goal location — by reproducing the same brain activity — to receive a reward. Science | 4 min read | |||||
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Why sari-wearing scientists inspire mePhotographs of Indian space scientists wearing colourful saris celebrating the success of the Chandrayaan-3 Moon lander inspired US-based biologist Manasee Weerathunga to consider the value of cultural dress for scientists. "For me — a computational biology PhD student from another sari-wearing country, Sri Lanka — [the images] mark a continued shattering of the stereotypical image of a scientist," she writes. Weerathunga gives a shout-out to Nature's Where I Work series, which shows researchers in their everyday clothes and hairstyles, for disrupting the idea — prevalent even among non-Western cultures — that scientists are all "white, male, and wearing a white lab coat". Scientific American | 4 min read | |||||
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Podcast: Artist–scientist collaborations"By trying to synthesize these different perspectives on what the science means, we arrive at something new," says composer David Ibbett, who directs the Multiverse concert series, in which researchers and musicians collaborate. Ibbett is one of the artists who joined the Working Scientist podcast to explore how artists and scientists can work together, and some of the challenges that productions such as this one can bring. Working Scientist, a Nature Careers podcast | 24 min listen | |||||
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| "After 25 years working with these animals, it still gives me chills to see a healthy manatee in the wild," says ecologist Nataly Castelblanco Martínez, who studies the marine mammals in Mexico's Sian Ka'an Biosphere Reserve. Martínez worries that increased tourism could lead to more boat collisions, which can be fatal for manatees. "If people don't make their own decisions to care for these animals, it's going to be impossible for us to protect manatees and other threatened species." (Nature | 3 min read) (Humberto Bahena Basave for Nature) | |||||
Quote of the day"People tie themselves up in knots trying to find ways to rearrange space-time in order to make time travel to the past possible."Theoretical cosmologist Katie Mack explains that physics has only straightforward answers for travelling into the future: all that is required is moving close to the speed of light or being in an intense gravitational field. (BBC Future | 16 min read) | |||||
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What matters in science | View this email in your browser Friday 2 February 2024 Hello Nature readers, Today we explore language-learning through a baby's eyes, explore why autoimmune disease is more common in women and discover an alternative to qubits called 'qumodes'. The artificial intelligence (AI) learned using video and audio from a helmet-mounted camera worn by Sam — here aged 18 months. (Wai Keen Vong) AI learns language through a baby's eyes ...
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