After a heart attack, immune cells are recruited to the brain to induce sleep, which suppresses inflammation in the heart and aids recovery. But if sleep is disrupted, excess inflammation worsens cardiac function and slows healing.

The current wave of papers from the Human Tumor Atlas Network represents a concerted effort to create multimodal atlases of tumours and their microenvironments, in various sites of origin. As well as the atlases, the initiative has generated a wealth of fresh insights into tumour biology, along with innovative tools to analyse these atlases in depth.

An innovative approach to 3D printing has been developed in which acoustic vibrations and light control the formation of a solid at an air–liquid interface. The strategy enables fast printing of objects with highly detailed features.

Analyses of ancient DNA from aurochs — large, wild cattle that co-existed with humans for millennia — reveals how early humans tamed these beasts and bred them with domesticated cattle for strength and resilience.