Our single-celled ancestor lived in a world without plants, animals or oxygen-rich oceans. Yet, this seemingly simple microorganism took the first steps toward complex life. From this ancestor emerged ...

Our limited understanding of the metabolism of our microbial ancestor is a sizeable gap in our knowledge of how complex life originated. Resolving whether our closest microbial relatives had ...

The origin of the nucleus remains hotly debated among scientists, but new imaging and genomic data are shedding light on this billion-year-old mystery.