Nature, Published online: 01 May 2024; doi:10.1038/d41586-024-01305-zLawmakers interrogated Peter Daszak over his ties to China and whether his organisation, EcoHealth Alliance, has been a good steward of taxpayer dollars.

Nature, Published online: 01 May 2024; doi:10.1038/d41586-024-01262-7Fluid studded with microscopic magnetic particles can be inserted into the body and later retrieved.

Nature, Published online: 01 May 2024; doi:10.1038/d41586-024-01260-9During periods of enforced isolation, life satisfaction for older adults took less of a hit in those who were already socially isolated.

Nature, Published online: 01 May 2024; doi:10.1038/d41586-024-01259-2Scientists identify the brain cells that regulate inflammation, and pinpoint how they keep tabs on the immune response.

Nature, Published online: 01 May 2024; doi:10.1038/d41586-024-01204-3Some scientists are reluctant to investigate questions about sex and gender, particularly given today’s sociopolitical tensions around gender identity. But they should lean in and embrace the complexity.

Nature, Published online: 01 May 2024; doi:10.1038/d41586-024-00585-9A study of male and female rats has examined the biomolecular changes induced in many of their organs by eight weeks of endurance treadmill training. The findings offer insights into the many benefits to our immune, metabolic and stress-response pathways as we adapt to exercise.