Here’s a recent story from the New York Times about the ethics of mixing the genes of multiple (more than 2) parents to form one child, through cytoplasmic transfer. In this case the point is to replace genes that would
The fertility rate fell markedly between 2007 and 2010, tracking the economic downturn, and has continued to decline through June 2013, though at a slower rate, the CDC reports. Following up on its recent in-depth report on births and fertility