For fish, hovering is not restful
Peer-Reviewed Publication
Updates every hour. Last Updated: 19-Oct-2025 11:11 ET (19-Oct-2025 15:11 GMT/UTC)
Fish make hanging motionless in the water column look effortless, and scientists had long assumed that this meant it was a type of rest. Now, a new study reveals that fish use nearly twice as much energy when hovering in place compared to resting. This more robust understanding of how fish actively maintain their position could inform the design of underwater robots or drones.
Women with kidney transplants who use assisted reproductive technology (ART) to conceive might face higher risks of complications during pregnancy, according to new research from the University of Cincinnati College of Medicine.
As humans, we tend to intuitively follow the gazes of others. But do pigeons do this, too? What role does group behaviour play in the process – and what does this tell us about the animals? A behavioural experiment by the Cluster of Excellence Collective Behaviour at the University of Konstanz in collaboration with Kyoto University.
Precursor transfer RNAs (pre-tRNAs) are early forms of tRNAs that need precise trimming at both ends to become active for protein production. Bacteria and archaea use small enzymes called “HARPs” to achieve this cleavage, but how exactly this happens remains unclear. Now, researchers from Kyushu University have uncovered that HARPs form a star-shaped complex of 12 units, enabling it to perform both 5’ and 3’ end cleavages—conferring it “dual-functionality.”