Interstellar objects like 3I/ATLAS are exciting, but there is no reason to claim that they are evidence of alien spacecraft – sometimes a comet is just comet, says Robin George Andrews
Magnetic gel could remove kidney stones more effectively
Standard techniques for removing kidney stones often require repeated surgery, but a magnetic gel seems to make the process more efficient
The US is unlikely to test nuclear weapons, despite what Trump says
President Donald Trump appears to have ordered a return to nuclear testing after decades of uneasy but effective treaties banning the practice – but will it actually happen?
Dinosaur skeleton settles long debate over ‘tiny T. rex’ fossils
Palaeontologists have argued for decades over whether certain fossils are young Tyrannosaurus rex or another species entirely – now they have strong evidence that the diminutive Nanotyrannus really existed
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The end of US support for the CMB-S4 telescope is devastating
The US government’s decision to stop supporting a telescope facility that would have given us unprecedented insight into the early universe is calamitous, says Chanda Prescod-Weinstein
Minecraft fan may be most committed hobbyist out there
Feedback comes across a YouTuber’s efforts to build a large language model in Minecraft and is impressed at the scale of it – even if it doesn’t quite live up to its promise to blow your mind “in spectacular fashion”
This paper should win a prize for its refusal to make any big claims
Feedback delights in a 2018 paper that takes care to warn us it reveals “nothing like super interesting”, and embarks on a quest to find more examples of disarming honesty
Germanium superconductor could help build reliable quantum computers
A new type of germanium superconductor could allow classical and quantum chips to be built into one device, creating better and more reliable quantum computers.
Tough choices lie ahead when it comes to climate change adaptation
COP’s negotiations this month will focus on money for climate change adaptation. While more money is essential, even a big increase won’t be enough on its own and we need to face up to this, warns Susannah Fisher
Horror fans aren’t cold and unfeeling – just listen to the science
The prevailing wisdom is that horror fans lack empathy and are addicted to adrenaline. My research shows otherwise, says Coltan Scrivner