Recently, researchers reported they revived function in a dead pig's brain. Is that ethical? An expert weighs in.

"...the Justice Department has veered away from its long track record of vigilance on behalf of the republic," argues law professor Kathleen Clark.

Given the news from China of genetically modified twins, what kinds of restrictions should there be on genetic engineering?

A Chinese scientist has claimed to use CRISPR to genetically engineer two babies. An expert explains what this means and the ethical implications.

The wrongful death lawsuit, based on the idea that embryos are "persons," could have consequences for abortion rights, embryonic stem cells, and IVF.