Sir Ian Wilmut, who created the famous cloned sheep, examines in a new article how he might take bone marrow from a woolly mammoth and re-create the species.
A Siberian expedition finds a well-preserved woolly mammoth. When scientists investigate, blood comes running out, lending hope to an ambitious cloning project.
Russian-South Korean project includes participation of disgraced stem cell researcher who faked his results.
Biotech start-up BioArts is giving five bidders the opportunity to clone their canines. Do I hear $100,000?