Articles

Custom Organs, Printed to Order
Replacing a failing kidney or scarred heart may soon require little more than a slurry of cells and a 3D printer.

Should We Study Human Embryos Beyond 14 Days?
Studying human embryos after 14 days of development could be illuminating, but ethical questions abound.

Beyond Antibiotics
A number of promising new technologies could save us from deadly infections after we lose our best medicines.