Embryonic stem cells are harvested from four to six-day-old embryos. These embryos are either leftover embryos in fertility clinics or embryos created specifically for harvesting stem cells by ...

(CNN) -- A human embryo, containing about a couple hundred cells, is smaller than the period at the end of a sentence. Scientists need strong microscopes to see these precursors to life, and to take ...

In this opening skirmish—call it “the cloning/stem cell moment”—four basic positions have emerged. Each represents a different set of moral, political, and practical judgments about what is ...

On April 10, the European Parliament, in its first reading of the Tissues and Cells Directive (the Directive), voted in favour of a ban on the creation of human embryos for research purposes including ...

LINCOLN, Neb. (AP) -- The emotion, tumult and acrimony over human cloning, stem-cell research and abortion were compressed into one small meeting room Thursday in the Capitol. Dozens of people packed ...

BATON ROUGE, La. (AP) -- Without debate, Louisiana's state Senate has voted to forbid government funding of efforts to perform what is often called "therapeutic cloning" to develop embryonic stem ...

Nov. 5 -- Remember human cloning? Less than a year ago, the leader of a religious sect known as the Raelians claimed they had produced the first human clone and named her "Eve." Then no evidence of ...

If there is one thing that people on both sides of the cloning debate agree upon, it’s that cloning is an incredibly inefficient process. When it comes to cloning animals, like Dolly and Snuppy, the ...

In the early 2000s, dental clinician and stem cell researcher Songtao Shi’s six-year-old daughter lost her first tooth. Curious, Shi, then at the University of Pennsylvania, took a closer look at its ...