An experimental technique for creating embryos with three biological parents appears to be moving toward an okay from the FDA. Ostensibly to prevent mitochondrial disease, the experiment would use one genetically modified egg (with the nucleus from another egg), and sperm to create a new human life via IVF.Now, an FDA committee is holding hearings (on Feb 25-26) to determine whether to allow the technique to be used to bring babies to birth. From the Science story: In the United States, FDA has said it has the power to regulate any transfer of mitochondrial DNA in embryos, because it is...