Scientists have genetically modified isolated microbes for decades. Now, using CRISPR, they intend to target entire microbiomes.

Early reports that Omicron causes less-severe disease than Delta seem to be borne out, but it’s not yet clear to what extent that’s due to the variant itself versus the populations it’s infecting.

Bacteria-infecting viruses affect the composition and behavior of microbes in the mammalian gut—and perhaps influence human biology.

Bacteria that live in the digestive tracts of animals may influence the adaptive trajectories of their hosts.

Recent advances in modeling the human placenta, the least understood organ, may inform placental disorders like preeclampsia.

Noncoding RNAs are proving to be critical players in the evolution of brain anatomy and cognitive complexity.

Researchers are revealing the complexity of the microbial community living on the body—and paving the way for new bacteria-targeting treatments for acne and other dermatological conditions.

George Church is at it again, this time using multiplex gene editing to create virus-proof cells, improve organ transplant success, and protect elephants.

President Biden’s planned rollout of additional COVID-19 vaccine doses is set to begin next week, but questions remain about who should get them.