Daniela Hernandez extends her health and science reporting to cover a variety of relevant subjects from Covid-19 to climate change.

The research offers the first proof that human embryonic stem cells -- vaunted for their potential to turn into every kind of human cell, at least in laboratory dishes -- can become functional human ...

An intense debate has flared over whether the federal government should fund research that creates partly human creatures using human stem cells. The National Institutes of Health declared a ...

Human gametes develop within the body of the resultant organism; It contains a human brain or a brain derived wholly or predominantly from human neural tissues; or It exhibits human facial features or ...