With embryolike constructs built entirely from stem cells, researchers can revolutionize our understanding of development. But how close to an embryo is too close? In April, researchers in China ...

You've heard it many times in the news. "I didn't break any laws," a business owner is reported to have said when asked about a dubious action he took. That's good to know, but sometimes that isn't ...

In April, researchers in China reported that they had initiated pregnancies in monkeys through a procedure seemingly much like in vitro fertilization (IVF), in which embryos created in a dish were ...