Fact-checking the Republican candidates

The CNN Fact-Checking Team is working through both Republican debates Wednesday night comparing notable, surprising or otherwise interesting claims from the candidates against the facts. The team, comprised of researchers, editors and reporters across CNN, will pick...

Startup developing in-vitro human sperm

A French startup working with a top government lab said it has developed in-vitro human sperm, claiming a breakthrough in infertility treatment sought for more than a decade. Researchers with Kallistem had announced the discovery previously, but they and French...