Colossal Biosciences, which aims to revive extinct species, announced it has raised an additional $200 million. Critics say ...

Scientists are seeking permission to generate human embryonic stem cells to study disease by introducing human genetic material into an animal oocyte. This has raised ethical questions that centre ...

Imagine a world where woolly mammoths roam the tundra once more—not in a prehistoric dream but as a living, breathing reality ...

Colossal Biosciences is working to bring back species like the woolly mammoth using CRISPR-Cas9 technology. The project aims to restore lost biodivers ...

Genetic engineering is the act of modifying the genetic ... suggesting that human ACE2 transgenic pigs are a viable large animal model for COVID-19.