Vikki Velasquez is a researcher and writer who has managed, coordinated, and directed various community and nonprofit organizations. She has conducted in-depth research on social and economic issues ...

A new method can test the activity of thousands of RNA enzymes, called ribozymes, in a single experiment. The "RNA world" hypothesis proposes that the earliest life on Earth may have been based on RNA ...

An inherent principle of publication is that others should be able to replicate and build upon the authors' published claims. A condition of publication in a Nature Portfolio journal is that authors ...