Today, at the microbial mats in the Atacama Desert and other sites throughout the world, scientists are investigating what the earliest eukaryotic cells may have looked like, the partnerships they may ...

Results reported in a recent Science paper provide the first experimental evidence to support the hypothesis that prokaryotes possess a defence system that might be analogous to eukaryotic RNA ...

Caption In eukaryotic tree, grey dash lines represent stem group eukaryotes. Solid lines denote crown group eukaryotes (LECA plus its descendants). Grey bars at nodes display the estimated age ...