Researchers at Oregon Health and Science University have achieved a longtime goal. They cloned a human embryo to derive embryonic stem cells able to transform into tissues and organs genetically identical to patients who need them. Jeffrey Brown talks to…
A team of Australian scientists have that corals can clone in a similar way that humans eggs split to create identical twins.
By Jenny Marder
Scientists have mapped out much of the genetic code of the extinct woolly mammoth, opening the door to the possibility of recreating the animal and perhaps other extinct species within the next 20 years.
By PBS NewsHour
Scientists have announced a new method of extracting stem cells from embryos, but it has done little to quell ethical concerns about the research. Two experts debate the ramifications of the new procedure.
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