Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Altering gut bacteria in male mice revealed that microorganisms are needed for normal sperm development and offspring health. Scientists discuss the implications in terms of understanding microbes, male fertility and pregnancy.
Humans’ effect on the polar ice sheets is slowing Earth’s rotation, posing challenges for its alignment with the official time standard. Two researchers discuss the science behind the slowdown and the impact it has on timekeeping.
Cutting-edge X-ray sources have enabled the structural dynamics of proteins to be tracked during biochemical processes, but the findings have been questioned. Two experts discuss the implications of a study that digs into this issue.
The analysis of DNA sequences sheds light on microbial biology, but it is difficult to assess the function of genes that have little or no similarity to characterized genes. Here, scientists discuss this challenge from genomic and microbial perspectives.
A transistor made from atomically thin materials mimics the way in which connections between neurons are strengthened by activity. Two perspectives reveal why physicists and neuroscientists share equal enthusiasm for this feat of engineering.
In a huge collaborative effort, millions of cells in the mouse brain have been mapped in detail. Two scientists examine the resulting wealth of insights into gene regulation in brain cells, neuronal connections and how our own brains evolved.
A pangenome is a collection of DNA sequences that reveals genetic variation between individuals. Four scientists discuss the generation of a human pangenome, and what insights can be gained from it.
Innovative use of medieval musings about the Moon has revealed that volcanic eruptions coincided with abrupt, global-scale cooling events. The approach is exciting from the perspective of climate scientists and historians alike.
Proteins have been developed that emit flashes of light in response to influxes of calcium ions into cells on millisecond timescales. Two sets of scientists discuss the legacy and future of these proteins.
An unprecedented glimpse of a distant planet reveals clues about how it might have formed. Scientists explain why it’s a win for atmospheric chemistry, and celebrate the technology that made it possible.
COVID-19 broadened the use of pulse oximeters for rapid blood-oxygen readings, but it also highlighted the fact that skin pigmentation alters measurements. Two groups of researchers analyse this issue, and its effects on people with dark skin.
A higher number of damaging variations in certain genes is associated with an increased likelihood that a man will be childless. A geneticist and an anthropologist discuss what can — and can’t — be learnt from this finding.
A quantum device uses ultracold atoms to sense gravitational changes that can detect a tunnel under a city street. Here, scientists discuss the advance from the viewpoints of quantum sensing and geophysics.
Research has uncovered factors that underlie the weight gain associated with cessation of smoking. Here, scientists consider the implications of this finding from the perspectives of gut biology and of smoking.
An atlas of the cell types found in the motor cortex of the brain has been built using various types of data. Two neuroscientists explain the technological feats involved in the project, as well as the utility of the resource for future research.
Does time spent using digital technology and social media have an adverse effect on mental health, especially that of adolescents? Here, two scientists discuss the question, and how digital devices might be used to improve well-being.
Researchers and policymakers rely on computer simulations called integrated assessment models to determine the best strategies for tackling climate change. Here, scientists present opposing views on the suitability of these simulations.
Engineering approaches allow biological structures and behaviours to be reconstituted in vitro. A biologist and a physicist discuss the potential and limitations of this bottom-up philosophy in providing insights into complex biological processes.
Adult tissues must maintain themselves and regenerate after damage. But are these crucial functions mediated by dedicated populations of stem cells, or do differentiated cells adopt stem-cell-like properties according to an organ’s needs? Here, two scientists present evidence from both sides of the debate.
The structures of anion-conducting channelrhodopsin proteins have been solved and used to develop a tool for optogenetics. Experts discuss what the structures tell us about ion conduction, and why the tool is needed.