Stem cells

The latest but far from final chapter on the controversial research at least starts well

The president has lifted the Bush restrictions on federal funding for embryonic stem cell research. What does that mean for an oft-criticized state agency with $3 billion in grants to give out?

From stem cells to the circadian cycle, the science behind new high-tech anti-aging research

Pioneers in building living tissue report important advances over the past decade

Also: updates on mass extinctions, stem cell ban, and the right to sue drug companies

A Dutch laboratory tries to produce pork without the pig

Prestigious Hastings Center bioethics think tank publishes comments by more than half of President Bush's bioethics council

The ability to spread underlies the killing power of cancer. The process occurs, John Pawelek thinks, when tumor cells fuse with white blood cells—an idea that, if right, could yield new therapies

Mischaracterizations of science lurk in the Vatican's latest instructions on bioethics, but Catholics probably won't follow them anyway

Shinya Yamanaka discovered how to revert adult cells to an embryonic state. These induced pluripotent stem cells might soon supplant their embryonic cousins in therapeutic promise

Once little more than a futile hope, some restoration of the injured spinal cord is beginning to seem feasible

Voters also okay doctor-assisted suicide, embryonic stem cell research and more...