Analysis of hundreds of single-cell genomes from Yellowstone National Park shows bacterial species are less cohesive than previously thought.

Researchers have developed nanorobots that kill cancer cells in mice. The robot's weapon is hidden in a nanostructure and is exposed only in the tumour microenvironment, sparing healthy cells.

Biologists are quietly rewriting what it means to be alive, and the human body has become one of their strangest frontiers.