After a year teaching an algorithm to differentiate between the echolocation calls of different bat species, Katarina decided she was simply too greedy to focus on one field. Following an internship ...

“Species turnover during the ‘boring billion’ was remarkably low,” Xiao explained. “Eukaryotic species evolved at a slower pace and tended to persist longer compared to later period ...

In this way, individuals of different microbial species could have nested within one another to ... some of the defining characteristics of modern eukaryotic cells—the nucleus, mitochondria, ...

RNA polymerases have been found in all species, but the number and composition of these proteins vary across taxa. For instance, bacteria contain a single type of RNA polymerase, while eukaryotes ...