Bringing Extinct Species Back From the Dead with Gene-Editing

American scientist Ben Novak has spent the past six years working on a process referred to as de-extinction—with the goal of bringing back the passenger pigeon species that died off in 1914. In Melbourne, Australia Novak has used gene-editing to weave the Cas9 gene into the reproductive organs of common pigeons. Cas9 enables the use of CRISPR, a tool that acts as molecular scissors and …